Light emitted by element X passes through a diffraction grating that has 1200 slits/mm/mm. The interference pattern is observed on a screen 79.0 cmcm behind the grating. First-order maxima are observed at distances of 58.2 cmcm , 65.2 cmcm , and 92.5 cmcm from the central maximum.
What are the wavelengths of light emitted by element X?
Answers
Answer:
The wavelengths are
\(\lambda_1 = 614\ nm \)
\(\lambda_2 = 687\ nm \)
\(\lambda_3 = 975\ nm \)
Explanation:
From the question we are told that
The number of slits per mm is N = 1200
The distance of the screen is \(D = 79.0 \ cm = 0.79 \ m\)
The first distance where First-order maxima is observed is \(y_1 = 58.2 cm = 0.582 \ m \)
The second distance where First-order maxima is observed is \(y_2 = 65.2 \ cm = 0.652 \ m \)
The second distance where First-order maxima is observed is \(y_2 = 92.5 \ cm = 0.925 \ m \)
Generally the distance of separation between the slits is mathematically represented as
\(d = \frac{1}{1200}= 8.33 *10^{-4} \ mm = 8.33 *10^{-7} \ m\)
Considering the first distance where First-order maxima is observed
Generally the the first distance where First-order maxima is observed is mathematically represented as
\(y_1 = \frac{\lambda_1 * D}{d}\)
=> \(\lambda_1 = \frac{0.582 * 8.33 *10^{-7} }{0.79}\)
=> \(\lambda_1 = 6.14 *10^{-7} m \)
=> \(\lambda_1 = 614\ nm \)
Considering the second distance where First-order maxima is observed
Generally the the second distance where First-order maxima is observed is mathematically represented as
\(y_2 = \frac{\lambda_2 * D}{d}\)
=> \(\lambda_2 = \frac{0.652 * 8.33 *10^{-7} }{0.79}\)
=> \(\lambda_2 = 6.87 *10^{-7} m \)
=> \(\lambda_2 = 687\ nm \)
Considering the third distance where First-order maxima is observed
Generally the the third distance where First-order maxima is observed is mathematically represented as
\(y_3 = \frac{\lambda_3 * D}{d}\)
=> \(\lambda_3 = \frac{0.925 * 8.33 *10^{-7} }{0.79}\)
=> \(\lambda_3 = 9.75 *10^{-7} m \)
=> \(\lambda_3 = 975\ nm \)
Related Questions
Which of the following refrigerants is very high pressure and generally does NOT need to be recovered?
A) R-22.
B) R-134a.
C) R-404A
D) R-744.
Answers
The refrigerant that is very high pressure and generally does not need to be recovered is option D) R-744.
R-744 is also known as carbon dioxide (CO2) refrigerant and is used in commercial refrigeration systems. It has a very high pressure, around five times higher than R-22 or R-134a, which makes it difficult to work with. However, because carbon dioxide is a natural refrigerant, it is non-toxic and non-flammable, and it does not contribute to ozone depletion or global warming, making it an environmentally friendly choice.
Unlike synthetic refrigerants such as R-22, R-134a, and R-404A, R-744 is considered a non-ozone-depleting substance and is exempt from the refrigerant recovery requirements of the Clean Air Act. As a result, it is not necessary to recover R-744 when it is released into the atmosphere.
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The following are four electrical components.
A. A component which obeys ohm's law
B. Another component which obeys ohm's law
but which has higher resistance than A
A filament lamp
C.
D. A component, other than a filament lamp,
which does not obey ohm's law.
a. For each of these components, sketch current-
voltage characteristics, plotting current on the
vertical axis, and showing both positive and
negative values. Use one set of axes for A and
B, and separate sets of axes for C and for D.
label your graphs clearly.
b.
Explain the shape of the characteristic for C
c. Name the component you have chosen for D.
Answers
For the following are four electrical components:
a. For components A and B, both of which obey Ohm's law, the current-voltage characteristics would be a straight line passing through the origin. The slope of the line for component B would be steeper than that of component A, indicating higher resistance.
b. The shape of the characteristic for component C, the filament lamp, can be explained by its construction. A filament lamp consists of a filament made of a resistive material, typically tungsten, which heats up and emits light when an electric current passes through it.
c. The component chosen for D, which does not obey Ohm's law, could be a diode. A diode is a two-terminal electronic component that allows the current to flow in only one direction.
For the following are four electrical components:
a. Sketches of current-voltage characteristics:
For components A and B, both of which obey Ohm's law, the current-voltage characteristics would be a straight line passing through the origin. The slope of the line for component B would be steeper than that of component A, indicating higher resistance.
Current (I)
^
| B
| /
| /
| /
| /
| /
| /
| /
| /
| /
|/
+------------------> Voltage (V)
Current (I)
^
| A
| /
| /
| /
| /
| /
| /
| /
| /
| /
|/
+------------------> Voltage (V)
For component C, a filament lamp, the current-voltage characteristic would be a curve that is not linear. It would exhibit a non-linear increase in current with increasing voltage. At lower voltages, the lamp would have low resistance, but as the voltage increases, the resistance of the filament also increases due to the phenomenon of thermal self-regulation. This leads to a slower increase in current at higher voltages.
For component D, a component that does not obey Ohm's law, the current-voltage characteristic could be any non-linear curve depending on the specific component chosen. Examples of components that do not obey Ohm's law include diodes and transistors.
b. The shape of the characteristic for component C, the filament lamp, can be explained by its construction. A filament lamp consists of a filament made of a resistive material, typically tungsten, which heats up and emits light when an electric current passes through it. As the voltage across the filament increases, the temperature of the filament increases as well, causing its resistance to increase. This increase in resistance results in a slower increase in current with increasing voltage, leading to the characteristic non-linear curve observed.
c. The component chosen for D, which does not obey Ohm's law, could be a diode. A diode is a two-terminal electronic component that allows the current to flow in only one direction. It exhibits a non-linear current-voltage characteristic where it conducts current only when the voltage is above a certain threshold, known as the forward voltage. Below this threshold, the diode has a high resistance and blocks current flow in the reverse direction. The characteristic curve of a diode would show negligible current flow until the forward voltage is reached, after which it exhibits a rapid increase in current with a relatively constant voltage.
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Sketch the pattern of the lines of forces around two positive charge separated from each other
Answers
The pattern of lines of force around two positive charges separated from each other demonstrates the repulsive nature of like charges and the direction and strength of the electric field between them.
When two positive charges are separated from each other, the lines of force (also known as electric field lines) originate from one positive charge and terminate on the other positive charge. The lines of force follow a pattern that reflects the repulsion between the positive charges.
Here's a verbal description of the pattern:
From each positive charge, the lines of force radiate outward in all directions.
The lines of force are evenly spaced and radially symmetric around each charge, indicating that the electric field strength is the same at all points along a given line.
As the lines of force move away from each charge, they curve away from each other, reflecting the repulsion between the positive charges.
The density of lines of force is higher near the charges and decreases as they move further apart.
The lines of force never cross each other, maintaining their continuous and unbroken nature.
look more Sketch the pattern
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The fractional change of reacting mass to energy in a fission reactor is about 0.1%, or 1 part in a thousand. For each kilogram of uranium that is totally fissioned, how much energy is released
Answers
Answer:
9*10^13 J
Explanation:
Given that
mass of the material, m = 0.001 kg
speed of light, c = 3*10^8 m/s
To solve this, we would be adopting Einstein's mass - energy relation...
E = mc²
Where
E = Energy, in joules
m = mass, in kg
c = speed of light, in m/s
E = 0.001 * (3*10^8)²
E = 0.001 * 9*10^16
E = 9*10^13 J
Thus, the total energy released would be 9*10^13 J
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The number of protons in the nucleus of an atom determines the species of the atom, i.e., the element to which the atom belongs. An atom has the same number of protons and neutrons. But the electron number cannot be used instead because (5 points)
a. electrons are not within the nucleus
b. electrons are negatively charged
c. electrons can be removed from or added to an atom
d. electrons are lighter than protons
Answers
The electron number cannot be used instead because electrons can be removed from or added to an atom (option C)
Why the electron number cannot be used instead?The element of an atom is determined by its proton count, while the electron count can exhibit variability. Take, for instance, a sodium atom, which encompasses 11 protons and 11 electrons. However, it has the capacity to relinquish one electron, transforming into a sodium ion housing only 10 electrons.
This occurs due to the relatively loose binding of electrons to the nucleus, enabling their removal through the influence of an electric field or alternative mechanisms.
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A different group is worried that the motion detector will not
effectively track the falling object, so they decide to roll a round
object down a ramp instead of dropping it. They measure the initial
height to calculate gravitational potential energy, use the motion
detector to track the final velocity, and calculate the kinetic energy of
the object at the end.
Despite all their careful measurements, it appears that energy is not
conserved! The object is not moving as fast at the bottom as the
initial gravitational potential would have led them to predict. Which
of the following suggestions is possible? Select all that apply.
Answers
The energy is not conserved because:
1. Energy may still be leaving the system through friction.
2. There could be measurement error that account for the missing energy
Given that a different group roll a round object down a ramp instead of dropping it. They measure the initial height to calculate gravitational potential energy, use the motion detector to track the final velocity, and calculate the kinetic energy of the object at the end.
Despite all their careful measurements, it appears that energy is not
conserved because
1. Energy may still be leaving the system through friction. In which the energy lost will be converted to thermal energy
2. There could be measurement error that account for the missing energy. The may occur due to systematic error or parallax error
The object is not moving as fast at the bottom as the initial gravitational potential would have led them to predict. This is not as a result of rotational energy. There is nothing like rotational energy.
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A ray of light incident in air strikes a rectangular glass block of refractive index 1.50, at an angle of incidence of 45°. Calculate the angle of refraction in the glass.
Answers
Answer:
Approximately \(28^{\circ}\).
Explanation:
The refractive index of the air \(n_{\text{air}}\) is approximately \(1.00\).
Let \(n_\text{glass}\) denote the refractive index of the glass block, and let \(\theta _{\text{glass}}\) denote the angle of refraction in the glass. Let \(\theta_\text{air}\) denote the angle at which the light enters the glass block from the air.
By Snell's Law:
\(n_{\text{glass}} \, \sin(\theta_{\text{glass}}) = n_{\text{air}} \, \sin(\theta_{\text{air}})\).
Rearrange the Snell's Law equation to obtain:
\(\begin{aligned} \sin(\theta_{\text{glass}}) &= \frac{n_{\text{air}} \, \sin(\theta_{\text{air}})}{n_{\text{glass}}} \\ &= \frac{(1.00)\, (\sin(45^{\circ}))}{1.50} \\ &\approx 0.471\end{aligned}\).
Hence:
\(\begin{aligned} \theta_{\text{glass}} &= \arcsin (0.471) \approx 28^{\circ}\end{aligned}\).
In other words, the angle of refraction in the glass would be approximately \(28^{\circ}\).
Which is the closeness of measured values to an accepted value of data?
O reproducibility
O significance
O accuracy
O precision
Answers
Answer:
O accuracy
Explanation:
Accuracy is the closeness of measured values to an accepted value of data. The accepted value of data is the true value.
The difference between the measured value and the true value is the error.
Precision is the ability to reproduce a given set of readings from an experiment. The nearness of results or measurements to on another is the precision. But the nearness of the measured value to the standard true value is a measure of its accuracy.Two people playing a game of table tennis make up a closed system with
12,175 J of energy. At the beginning of the game the system has 9,875 J of
ME, and at the end it has 8,430 J of ME. How much of the total energy was
transformed into thermal energy during the game?
A.10730
B.1445
C.2300
D.3745
Answers
Answer:
Its B 1445
Explanation:
Answer:
c 1445
Explanation:
jus got a 100 on the TEST!!!
Explain how you can work out the
relationship between the frequency of a
ray of light and its angle of refracton.
Answers
Answer:
The speed of light changes as it moves between media. This causes refraction. Angles of refraction can be calculated using known speeds or wavelengths. Beyond the critical angle, light is reflected.
Light travels at different speeds through different materials.
true or false
Answers
Answer:
true
Explanation:
Consider a typical diverging passenger-side mirror with a focal length of -80 cm. A 1.5-m-tall cyclist on a bicycle is 25 m from the mirror. You are 1.0 m from the mirror, and suppose, for simplicity, that the mirror, you, and the cyclist all lie along a line. a. How far are you from the image of the cyclist? b. What is the image height?
Answers
You are 20.05 m far from the image of the cyclist. the image of the cyclist in the mirror is 1.14 m tall.
The passenger side mirror is convex for what reason?Driver-side mirrors are flat, whereas the passenger-side mirrors are convex—a little outward flare. To give the driver a wider field of vision and reduce blind spots, the passenger-side mirrors are convex.
we can use the mirror equation:
1/f = 1/do + 1/di
where f = focal length, and di = image distance (distance from the mirror to the image).
The distance from the cyclist to the mirror is the object distance, do = 25 m. The distance from you to the mirror is the image distance, di = 1.0 m.
we get:
1/-80 = 1/25 + 1/di
-0.0125 = 0.04 + 1/di
-0.0525 = 1/di
di = -19.05 m
The negative sign for the image distance indicates that the image is virtual and located behind the mirror.
To find the distance from you to the image,
distance from you to image = |di - 1.0 m| = |-19.05 m - 1.0 m| = 20.05
b. To find the image height,
m = -di/do
where m = magnification, di = image distance, and do = object distance. The negative sign indicates that the image is inverted.
m = -di/do = -(-19.05 m)/25 m = 0.762
Since the cyclist is 1.5 m tall, the image height is:
image height = magnification x object height = 0.762 x 1.5 m = 1.14 m
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An object attached to a spring vibrates with simple harmonic motion as described by the figure below.
For this motion, find the following.
(a) the amplitude
(b) the period
(c) the angular frequency
(d) the maximum speed
(e) the maximum acceleration
(f) an equation for its position x in terms of a sine function (Do this on paper. Your instructor may ask you to turn in this work.)
Answers
The graph provided is a displacement-time graph. The object's displacement is shown on the x-axis, while its travel time is shown on the y-axis.
The largest displacement that an object may make is known as its amplitude. The maximum displacement made by the object is 2 cm.
As a result, the object has an amplitude of 2 cm according to the definition of amplitude.
The amplitude of the object depends on the displacement made by the object. The maximum displacement is made when the object moves to an extreme position in an oscillation.
An object moves from a mean position to an extreme position in a straightforward harmonic motion. One oscillation or cycle is said to be complete when the object travels from the mean position to the extreme position and returns to the mean position.
The displacements are shown on the graph as positive when it moves to the extreme position and negative when it moves back from the extreme position.
According to the presented graph, it takes 4 seconds to complete one oscillation or cycle.
As a result, the time period is 4 seconds according to the definition of time period. Therefore, the time period as ω = 2π/T.
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Part A) A pulley is massless and frictionless. The masses 3 kg, 3 kg, and 7 kg are suspended as in the figure. What is the tension T1 in the string between the two blocks on the left-hand side of the pulley?
The acceleration of gravity is 9.8 m/s^2.
Answer in units of N.
Part B) What is the magnitude of the acceleration of the lower left-hand block?
Answers
Answer:
Explanation:
find the system acceleration
F = ma
7g - 3g -3g = (7 + 3 + 3)a
1(9.8) = 13a
a = 9.8/13 m/s²
String tension must support weight and provide for acceleration.
F = ma
T₁ = 3(9.8 + 9.8/13)
T₁ = 31.7 N
2 Examples of Gravitational Potential Energy
Answers
Answer:
Examples of items with gravitational potential energy include:
A raised weight
Water that is behind a dam
A car that is parked at the top of a hill
A yoyo before it is released
River water at the top of a waterfall
A book on a table before it falls
A child at the top of a slide
Ripe fruit before it falls
I hope this help you! If it help pls mark me brainlest!
. A 500 N force is applied to a 25 m/s2 object. The mass of the object is ?
Answers
Answer:
Mass = force / acceleration
mass = 500 N / 25 m/s^2
mass = 20 kg
Therefore, the mass of the object is 20 kg.
Imagine an isolated positive point charge Q (many times larger than the charge on a single proton). There is a charged particle A (whose charge is much smaller than charge Q) at a distance from the point charge Q. On which of the following quantities does the magnitude of the electric field created by charge Q at particle A's position depend?a) the amount of the charge on the point charge Qb) the specific location of the charged particle A (while the distance between Q and A is fixed)c) the specific location of the point charge Q (while the distance between Q and A is fixed)d) the type of the charge on the charged particle Ae) the relative orientation between Q and A (while the distance between Q and A is fixed)f) the distance between the point charge Q and the charged particle Ag) the amount of the charge on the charged particle A
Answers
Answer:
b) the specific location of the charged particle A
f) the distance between the point charge Q and the charged particle A
Explanation:
For this exercise we write the electric field
E = k Q / r²
where r is the distance between charge Q and test charge A
Let's examine the different claims
a) do not depend. The charge of the individual is independent of the elective field
b) depends. The position of the particle is different if it has the same distance
c) do not depend. The particle Q must be considered the origin of the coordinate system
d) does not depend. The charge of a particle is independent of the field where it is
e) does not depend. The position of the particle is fixed
f) depends. The field is different for each distance
g) does not depend. The amount of electric charge is independent of the field
The magnitude of the electric field created by charge Q at particle A depends on
The type of charge on the charged particle Abecause, the directions of the electric field lines for a positive charge and a negative one are just opposite to each - other,
The relative orientation between Q and Abecause the direction of the electrostatic force vector just reverses for a reversion of the relative orientation of the charges.
What is magnitude of electric field?It is simply defined as the force per charge on the test charge.
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Which of the following expressions shows the correct relationship between 1 T (1 tesla) and other common units?1) 1 N/(Am)2) 1 Nm/A3) 1 NAm4) 1 A/(Nm)
Answers
The magnetic force is given by the equation,
\(F=\text{qvB}\)On rearranging the above equation,
\(B=\frac{F}{qv}\)On substituting the quantities with their units,
\(\begin{gathered} T=\frac{N}{C\cdot\frac{m}{s}} \\ \end{gathered}\)But couloumb per second is ampere.
Thus,
\(T=\frac{N}{A\cdot m}\)Therefore the correct answer is option 1, 1 N/(Am)
Particle is thrown in upward direction with initial velocity of 60m/s. Find average speed & average velocity after 10 seconds. Take g= 10 ms-2
Answers
The particle's average speed after 10 seconds is 110 m/s, and its average velocity is zero.
When a particle is thrown upwards, its initial velocity is in the upward direction and its acceleration is in the downward direction due to gravity. The acceleration due to gravity is approximately 10 m/s² near the surface of the Earth. Therefore, the particle's velocity decreases at a rate of 10 m/s² until it reaches its highest point, where its velocity is zero. After that, the particle's velocity becomes negative and it starts to fall back to the ground.
To find the particle's average speed after 10 seconds, we need to calculate the total distance traveled by the particle in 10 seconds. The formula to calculate the distance traveled by a particle under constant acceleration is:
distance = initial velocity * time + (1/2) * acceleration * time²
Substituting the given values, we get:
distance = 60 m/s * 10 s + (1/2) * 10 m/s² * (10 s)²
distance = 600 m + 500 m
distance = 1100 m
Therefore, the average speed of the particle after 10 seconds is:
average speed = total distance / total time
average speed = 1100 m / 10 s
average speed = 110 m/s
To find the particle's average velocity after 10 seconds, we need to calculate the displacement of the particle in 10 seconds. Displacement is the change in position of the particle, which is equal to the difference between its final and initial positions. Since the particle is thrown upwards and then falls back to the ground, its displacement after 10 seconds is zero. Therefore, the average velocity of the particle after 10 seconds is also zero.
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PLEASE HELP 100 POINTS
The graph shows the force applied to an object over a displacement of 4 meters. What is the total work done on the object over the 4 meter displacement?
Answers
Answer:
okay, So Um,
Explanation:
BTW, There are only 50 points, brainly subtracts half of the points
9. All of the following are adaptations of herbivores EXCEPT:
special digestive systems for digesting plant cellulose
Okeen eyesight for sporting prey
O coat colors that help them blend in with the land
fut teeth for chewing tough plant matter
PLZ HURRY PLZ IMM MARK BRAINLYEST
Answers
Answer:
B.KEEN EYESIGHT thats for predators !
Explanation:
Herbivores have multiple stomachs to process tough foods, coats to blend in so they don't get eaten, and tough teeth for chewing on the plants. THEY DO NOT HAVE PREY, THEY ARE THE PREY.
State the hamilton's equation of
motion and derive each of them
Answers
Hamilton's equations of motion are a set of equations that describe the dynamics of a classical mechanical system in terms of a generalized coordinate and its conjugate momentum.
How to explain the equationThe equations are derived from the Hamiltonian formalism. Hamilton's equations can be derived from the Hamilton's principle, which is a variational principle that states that the action of a dynamical system is stationary.
To derive these equations, we start with the Hamiltonian function H(p, q) and use the principle of least action. The action S is defined as the integral of the Lagrangian L(q, q', t) over time:
S = ∫[L(q, q', t)] dt
To find dp/dt, we differentiate the Lagrangian with respect to q:
∂L/∂q = ∂(p * q' - H)/∂q
= -∂H/∂q
Using the chain rule, we find:
dL/dt = (∂L/∂q) * dq/dt + (∂L/∂q') * dq'/dt
= -∂H/∂q * dq/dt + p * d(q')/dt
= -∂H/∂q * dq/dt + p * d^2q/dt^2
= -∂H/∂q * dq/dt + dp/dt
Since the Lagrangian is equal to p * dq' - H, we can write:
dL/dt = -∂H/∂q * dq/dt + dp/dt
From the principle of least action, we know that the action S is stationary, so dL/dt = 0. Thus, we have:
-∂H/∂q * dq/dt + dp/dt = 0
Rearranging the equation, we obtain the first equation of motion:
dp/dt = -∂H/∂q
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Which factor limits interference between waves? A constant phase relationship between waves Similar wave amplitudes Unequal wavelengths Radiation through the same region
Answers
Answer:
Unequal Wavelengths
Explanation:
Got it right on the exam
Unequal wavelengths limit interference between waves because the waves will have different frequencies and will not be able to form a stable interference pattern. When waves of different wavelengths interact, they will interfere constructively and destructively at different points, creating an unpredictable pattern.
Answer:
Unequal wavelengths
Explanation:
Got it correct on the quiz.
The decibel rules of thumb can be combined. (a) If a sound has intensity xdB, how many dB does a sound 100 times more intense have? (b) If another sound has intensity ydB, how many dB does a sound 4 times less intense have? (c) Combine what you know about (a) and (b): If a sound has intensity zdB, how many dB does a sound 25 times more intense have?
Answers
The acceleration of a block attached to a spring is given by a=−(0.342m/s2)cos([2.24rad/s]t).
A) Frequency = 0.357 Hz
B) What is the maximum speed of the block?
C)What is the amplitude of the block's motion?
Answers
As the springs reaches its ideal lenght, or the point at when all of the energy held as in spring is released to kinetic energy, the block goes at its fastest rate. As the item begin at zero, Ki = 0. Due to a lack of friction, Wnc = 0.
The top speed, what is it?The fastest a person can go is regarded to be at max velocity. Athletes can alter their motion's magnitude (how quickly they are running), direction, or both in order to change its acceleration when velocity has a magnitude and a direction connected with it.
The blocks springs program's speed is what.The block travels at a velocity of one m/s before to impacting the spring. The spring does have a constant of 1 N/m, and the weight of the block is 1 kg. The power that has been transmitted to and stored in the springtime is represented by this work. The velocity of the slowing blocks is what provides the energy.
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A fisherman and his young son are in a boat on a small pond. Both are wearing life jackets. The son is holding a large helium filled balloon by a string, holding a significant part of his weight. Consider each action below independently and indicate whether the level of the water in the pond, Rises, Falls, is Unchanged or Cannot tell.
The son pops the helium balloon.
The fisherman knocks the tackle box overboard and it sinks to the bottom.
The son finds a cup and bails some water out of the bottom of the boat
The fisherman lowers himself in the water and floats on his back.
The fisherman lowers the anchor and it hangs one foot above the bottom of the pond. (the anchor is initially inside the boat)
The son gets in the water, looses his grip on the string, letting the balloon escape upwards.
Answers
(a) The son pops the helium balloon (unchanged)
(b) The fisherman knocks the tackle box overboard and it sinks to the bottom (rises)
(c) The son finds a cup and bails some water out of the bottom of the boat (falls)
(d) The fisherman lowers himself in the water and floats on his back (unchanged)
(e) The fisherman lowers the anchor and it hangs one foot above the bottom of the pond (rises)
(f) The son gets in the water, looses his grip on the string, letting the balloon escape upwards (rises).
Displaced volume of water in the pond
According to Archimedes principle, when a body is partially or completely immersed in a fluid, it experiences an upthrust which is equal to weight of to fluid displaced.
F = ρVg
V = F/ρg
where;
V is volume of water displacedρ is density of the immersed objectg is acceleration due to gravityWhen an object with a significant weight is dropped into the pond, the level of water in the pond will rise and vice versa.
The son pops the helium balloonThe water level in the pond will be Unchanged, since the weight of the balloon is almost insignificant.
Fisherman knocks the tackle box overboard and it sinks to the bottomThe water level will rise because the weight of the tackle box is significant.
Son finds a cup and bails some water out of the bottom of the boatThe water level will fall since some volume of water is being removed.
Fisherman lowers himself in the water and floats on his backThe water level will be unchanged, since nothing new is added into the pond.
Fisherman lowers the anchor and it hangs one foot above the bottom of the pondThe water level will rise because the anchor will displace some volume of water upwards when it is dropped inside the pond.
Son gets in the water, looses his grip on the string, letting the balloon escape upwards.The water level will rise, because the balloon will displace the water upwards when it escape upwards.
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what happen to kinetic energy of a body if it speed is doubled
Answers
Answer:
The energy possessed by a body because of its motion, equal to one half the mass of the body times the square of its speed is called its kinetic energy. Hence, when velocity is doubled, kinetic energy becomes 4 times.
Explanation:
During the 28-day lunar cycle, the positions of the Sun,
Earth, and the Moon change in relation to one another. The
diagram shows how their relative positions change.
Which statement describes the positions of the Moon, the Sun, and Earth
during a new moon?
A. Earth is closer to the Sun than to the Moon.
B. The Moon is between Earth and the Sun.
C. Earth is between the Moon and the Sun.
D. The Sun is between Earth and the Moon.
Answers
Answer: B
Explanation: B is the correct statement describing the positions of the Moon, the Sun, and the Earth during a new moon. The Moon is between Earth and the Sun.
During a new moon, the Moon is positioned between the Sun and the Earth, with the illuminated side of the Moon facing away from the Earth. This means that the side of the Moon that faces the Earth is not receiving any sunlight, making it invisible to us from Earth. The new moon is the first phase of the lunar cycle and occurs roughly every 29.5 days.
A pitcher throws a baseball from the pitcher's mound to home plate in 0.46 s. The
distance is 18.4 m. What was the average speed of the baseball?
a. 40 m/s
b. - 40 m/s
c. 0.03 m/s
d. 8.5 m/s
Answers
The average speed of the baseball is option a. 40 m/s .
To calculate the average speed of the baseball, we use the formula:
Average Speed = Distance / Time
Given:
Distance = 18.4 m
Time = 0.46 s
Plugging in the values, we have:
Average Speed = 18.4 m / 0.46 s = 40 m/s
Therefore, the average speed of the baseball is 40 m/s.
Option a, 40 m/s, is the correct answer. This means that the baseball traveled an average distance of 40 meters per second from the pitcher's mound to home plate.
Average speed is a scalar quantity that represents the total distance traveled divided by the total time taken. It gives us an idea of how fast an object is moving on average over a given distance.
In this case, the baseball covered a distance of 18.4 meters in a time of 0.46 seconds. Dividing the distance by the time gives us the average speed of 40 m/s.
It's important to note that average speed is a measure of the overall rate of motion and does not provide information about the direction of motion. Therefore, negative values such as option b (-40 m/s) or extremely small values such as option c (0.03 m/s) are not appropriate in this context.
Option d (8.5 m/s) is also incorrect as it does not match the calculated average speed of 40 m/s.
Therefore, the correct answer is option a, 40 m/s, as it accurately represents the average speed of the baseball.
Know more about average speed here:
https://brainly.com/question/4931057
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11. Trait theory claims that
O A. people from the same locations
share the same personality type.
B. you always behave the way your
personality type says you will.
O C. your personality is made up of a
number of traits.
O D. you have one characteristic that
defines your entire personality.