Write down the method for the verification of Newton's second law of motion
Answers
We can verify the Newton's second law of motion mathematically by using the momentum impulse relation.
The rate of change of a body's momentum is directly proportional to the applied force and occurs in the direction in which the force operates, according to Newton's Second Law of Motion. where F is the applied force, M is the body's mass, and A is the resulting acceleration.
One way to state Newton's second law of motion is as follows:
Force is inversely correlated with change in momentum and time.
Now, F is directly proportional to mv-mu t or m(v-u) t [where (v-u) represents the acceleration, or change in velocity].
As a result, we discover that F is inversely proportional to m.
By using a constant k, this relationship F is directly proportional to ma can be transformed into an equation.
Thus, F=kma (where k is constant)
The preceding equation is now F=ma or Force= Mass*Acceleration because the value of k in SI units is 1.
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Related Questions
A cart is moving on a level track in the positive x-direction. A force acting parallel to the x-axis is exerted on the cart. The graph above shows the net exerted on the cart as the function of displacement. As the cart travels from x = 0 to x=4 m. What is the net change of kinetic energy of the cart?
Answers
The net change in kinetic energy of the cart is equal to the work done on the cart by the net force. Since the net force is given as a function of displacement, we can find the work done by integrating the force over the displacement:
W = ∫Fdx
The work done between two points x1 and x2 is given by:
W = ∫x1^x2 Fdx
From the graph, we see that the force is constant at 20 N between x = 0 and x = 2 m, and is zero between x = 2 m and x = 4 m. Therefore, we can break the integral into two parts:
W = ∫0^2 (20 N) dx + ∫2^4 (0 N) dx
W = (20 N) ∫0^2 dx + 0
W = (20 N) (2 m - 0 m)
W = 40 J
The work done on the cart is 40 J. Since the work-energy principle states that the net work done on an object is equal to its change in kinetic energy, we know that the net change in kinetic energy of the cart is also 40 J.
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1. A 2.08 m tall man stands 1.78 m from a lens with focal length 28.3 cm.
How tall (in m) is his image formed by the lens? Be sure to include the sign to indicate orientation!
2. When laser light of some unknown wavelength hits a diffraction grating with 20 slits per millimeter, it produces bright fringes separated by 27.2 mm on a screen that is 2.41 m away.
Given the pattern formed, what must be the wavelength of the light (in nm)?
Answers
1. The height of the image is 0.287 m.
2. The wavelength of the light is 563 nm.
1. The image distance, denoted as `i`, is determined by the lens formula: `1/f = 1/o + 1/i`, where `f` represents the focal length, `o` is the object distance, and `i` represents the image distance. Given `f = 28.3 cm` and `o = 1.78 m`, we need to convert the object distance from meters to centimeters: `o = 1.78 m = 178 cm`. Therefore, the image distance is calculated as follows:
i = (1/f - 1/o)^-1 = (1/28.3 - 1/178)^-1 = 24.53 cm.
The image height, denoted as `h'`, can be determined using the object height `h` and the magnification `m` relationship: `h' = m * h`. The magnification `m` is given by `m = -i/o`, where the negative sign indicates an inverted image. Thus,
m = -i/o = -(24.53 cm)/(178 cm) = -0.138.
The image height `h'` is obtained by multiplying `h` by `m`: `h' = m * h`, where `h = 2.08 m`. Therefore,
h' = (-0.138) * 2.08 = -0.287 m.
The negative sign signifies an inverted image. Hence, the height of the image is determined as `0.287 m`, and it is inverted.
2. Bright fringes are observed at angles `theta` satisfying the condition `d sin theta = m lambda`, where `d` represents the spacing between two slits, `m` is an integer indicating the fringe order, and `lambda` denotes the wavelength of light. In this case, given `d = 1/20 mm` and `m = 1`, the angle `theta` corresponding to the first bright fringe is given by `tan theta = x/L`, where `x` represents the separation between two fringes, and `L` is the distance from the grating to the screen. With `x = 27.2 mm` and `L = 2.41 m`, we can calculate:
tan theta = (27.2 mm)/(2.41 m) = 0.01126.
Therefore, `sin theta = tan theta = 0.01126`.
Consequently, the wavelength `lambda` is determined using the formula `lambda = d sin theta / m`, where `d = 1/20 x 10^-3 m`, `sin theta = 0.01126`, and `m = 1`:
lambda = (1/20 x 10^-3 m) x 0.01126 / 1 = 5.63 x 10^-7 m = 563 nm.
In summary:
1. The height of the image is 0.287 m.
2. The wavelength of the light is 563 nm.
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What are quarks ?
How can they be extracted ?
Answers
Explanation:
they are subatomic particles that interact by means of the strong force. as they are strong nuclear force its so powerful, it makes it extremely difficult to separate quarks.
hope this helps
have a great day
Quarks are elementary particles of matter. And they can be extracted in neutrino - induced dilepton events
QUARKS
A quark can be described as one of the fundamental units of matter. Under particle Physics, when two or more ionized quarks come together, they will form a composite particle called hadron.
Hadrons are particles that are affected by strong force. Examples of hadron are:
ProtonsNeutronsThe quark model of hadrons helps to resolve many fundamental particle problems.
Apart from cosmic radiation, quarks can be extracted in neutrino - induced dilepton events with the use of hydrogen and deuterium exposure.
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Larger, heavier particles diffuse _____________________ (faster, slower, at the same speed)
Answers
Larger, heavier particles diffuse slower than smaller, lighter particles. This is because the larger particles have more mass, which makes them move more slowly.
Additionally, the larger particles have a greater surface area to volume ratio, which means that they interact with more of the surrounding molecules. This interaction slows down the diffusion process.
For example, if you were to put a drop of food coloring in a glass of water, the food coloring would diffuse throughout the water more quickly if the food coloring were made up of smaller, lighter molecules.
The smaller molecules would move more quickly and would interact with fewer of the surrounding water molecules.
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At sea level, water boils at 100 degrees Celsius and methane boils at -161 degrees Celsius. Which of these has a stronger force of attraction between its particles? Explain your reasoning.
Answers
Water has a stronger force of attraction between its particles than methane.
To justify this we have to remember that temperature is a measure of the kinetic energy of the particles (atoms and molecules) in a given system. As temperature increase the kinetic energy increases as well; now larger molecules will have more electron and nucleis that attract with each other, then they will need more kinetic energy (temperature) to boil.
The mass of a newborn baby's brain has been found to increase by about 1.6 mg perminute. (a) How much does the brain's mass increase in one day?
Answers
ANSWER
2304 mg
EXPLANATION
The rate is given in mg per minute. To find how much the brain's mass increases in one day we have to find how many minutes are in a day.
Assuming that a day has 24 hours and 1 hour has 60 minutes:
\(24h\cdot\frac{60\min}{1h}=1440\min \)One day has 1440 minutes. Then, in one day the brain's mass increases:
\(1.6mg/\min \cdot1440\min =2304mg\)The newborn baby's brain's mass increases 2304 mg in one day.
6. Given cost=0 € (2): a) Determine sin28 b) Which quadrant does sin20 lie and what is the angle to the nearest tenth of a degree? Q
Answers
Since cost = 0 €, the value of sinθ will be 1. Recall that the Pythagorean identity for sine and cosine states that sin²θ + cos²θ = 1. So, sin²θ = 1 - cos²θ. Given cost=0 €,cosθ=0. Substituting cosθ = 0, we get;sin²θ = 1 - cos²θ. sin²θ = 1 - 0² = 1Therefore,sinθ = √1 = 1
This means that sin28 = 1 Since sin20 lies in the first quadrant (0° to 90°), it will have a positive value. To determine sin20, we can use a calculator or reference a trigonometric table. To the nearest tenth of a degree, sin20 is 0.3 and it lies in the first quadrant.
An identity that expresses the Pythagorean theorem in terms of trigonometric functions is known as the Pythagorean trigonometric identity, or simply the Pythagorean identity. It is one of the fundamental relations between the sine and cosine functions, along with the sum-of-angles formulas. The angle can be any real value, and the equation is s i n 2 + c o s 2 = 1. Given both the sine value and the quadrant in which the angle is located, we can use the Pythagorean identity to determine the angle of cosine.
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You observe a quasar at a redshi , and determine that the observed flux of light from the quasar varies on a timescale days. ( is time measured by the observer.) if the observed variation in flux is due to a variation in the intrinsic luminosity of the quasar, what was the variation timescale
Answers
If the observed variation in flux is due to a variation in the intrinsic luminosity of the quasar, what was the variation timescale at the time the light was emitted will be found and Rmax is equals to 1.3*10^15 cm.
In particle physics experiments the energy available for the production of new effects is the most important parameter. The required large centre of mass energy can only be provided with colliding beams where little or no energy is lost in the motion of the centre of mass system (cms).
Besides the energy the number of useful interactions (events), is important. This is especially true when rare events with a small production cross section σp are studied.
The quantity that measures the ability of a particle accelerator to produce the required number of interactions is called the luminosity and is the proportionality factor between the number of events per second dR/dt and the cross section σp.
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what is the net force
Answers
Answer:
20 N in West direction.
Explanation:
opposite forces cancel each other. so 20 N in north and 20N in south cancel each other. In west and east direction...
70N in west-50N in east= 20N in west
What happens when you push or pull a water tube
Answers
The thing that happens when you push or pull a water tube is that the force makes the tube to speed up, slow down, or be in one place.
It is very hard when pulling water and if a person need to consistently pull air out of the tube before water makes it to the pump, it is very difficult and some pumps may or cannot do it.
What is the pulling about?In regards to pushing, when a person is pushing above the Center of Gravity, one is pushing the said object into the ground and thus is increasing the rate of friction.
If a person is pulling you are said to be pulling above the Center of Gravity and lowering friction.
So, The thing that happens when you push or pull a water tube is that the force makes the tube to speed up, slow down, or be in one place.
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you measure the change of flux and the induced voltage that results when you drop a magnet through a coil. you test two cases. in the first case, you drop the magnet height of 3 cm above the coil. in the second case, you raise the magnet so that it drops 20 cm before entering the coil. which one of the following is a correct statement about what you expect to observe in the second case, compared to the first case?
Answers
The induced voltage in the second case will be higher but the change in flux will be same in comparison to the first case.
In the experiment of measuring the change of flux and the induced voltage,
In the first case the magnet is dropped from a height 3cm of the coil and in the second case the the magnet is raised so that it drops 20cm before entering the coil.
When compare to the first case the second case will have a higher value of induced voltage but the change in flux will be same.
The induced voltage in a coil is given by,
E = dM/dt
dM is change in magnetic flux,
t is time,
As we can see that the time is inversely proportional to the induced emf and in the second case the magnet is drop from a height which allows it to go with the higher velocity in a less time that is why the induced EMF is more in magnitude but because the magnet is same in both the cases the change in flux is constant.
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its about dirve its about power
Answers
Answer:
We stay hugely we devour
Explanation:
It's the rock
A florist has 144 roses and 312 lilies. He makes separate bunches of roses and lilies having equal number of flowers in each bunch. What is the greatest number of flowers the florist can have in each bunch
Answers
I NEED HELP ASAP
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Describe how you would use vectors to represent an object moving at a constant velocity. Describe how you would use vectors to represent an accelerating object. (site 1)
Answers
Answer:
have a good day and just to let you know plz don´t copy and paste this put is into your words
Explanation:
Vector diagrams are diagrams that depict the direction and relative magnitude of a vector quantity by a vector arrow. Vector diagrams can be used to describe the velocity of a moving object during its motion. For example, a vector diagram could be used to represent the motion of a car moving down the road.In a vector diagram, the magnitude of a vector quantity is represented by the size of the vector arrow. If the size of the arrow in each consecutive frame of the vector diagram is the same, then the magnitude of that vector is constant. The diagrams below depict the velocity of a car during its motion. In the top diagram, the size of the velocity vector is constant, so the diagram is depicting a motion of constant velocity. In the bottom diagram, the size of the velocity vector is increasing, so the diagram is depicting a motion with increasing velocity
Vector diagrams can be used to represent any vector quantity. In future studies, vector diagrams will be used to represent a variety of physical quantities such as acceleration, force, and momentum. Be familiar with the concept of using a vector arrow to represent the direction and relative size of a quantity. It will become a very important representation of an object's motion as we proceed further in our studies of the physics of motion.
listed following are three possible models for the long-term expansion (and possible contraction) of the universe in the absence of dark energy. rank each model from left to right based on the ratio of its actual mass density to the critical density, from smallest ratio (mass density much smaller than critical density) to largest ratio (mass density much greater than critical density).
Answers
Open, flat, and closed universes are the three forms of expanding universes that are theoretically possible. The universe would always grow if it were open.
What long-term expansion universe in lack of dark energy?If the universe were flat, it would also continue to expand indefinitely, but the rate of growth would eventually reduce to zero.
One is the red-shift phenomenon, which shows that the cosmos is expanding. Cosmic microwave background radiation is the second type. The universe's abundance of various elements is the third.
The majority of astronomers think that dark energy is a type of substance with an inverse gravity that repels matter from its vicinity.
Therefore, According to scientific theories, this is what is causing the universe to expand and to push stars, planets, and galaxies apart.
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If mass (M), Velocity (V) and length (L) are considered as fundamental quantities in certain system of unit. Find the dimensional formula for force.
Answers
Answer:
Explanation:
MLT^-2
.....
What 4 pieces of information do you need to gather while you’re stopped and waiting to turn at a traffic light?
Answers
The four pieces of information that you need to gather while you’re stopped and waiting to turn at a traffic light include the following Check rear, Check for a gap, Check path and Check signal.
What is traffic light?Traffic light are those set of light signals found on the highway road side that helps in controlling and monitoring the moving vehicles.
The traffic light is made up of three lights which include the following:
Red light: This tells the driver to stop or wait.Amber light: This signals the driver to stop where is safe because the light is about turning red.Green lights: This shows that the driver can move.When stopped by the traffic light you need to gather the following information to avoid tragic situations;
Check rear, Check for a gap,Check path and Check signal.Learn more about traffic light here:
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i need help with this lab. i have to answer the lab questions 4-10. i will upload the graphs u need to use. someone please answer these questions. i will upload the pictures in different questions because it won’t let me upload 3…
Answers
The speed of an object is the rate of change of its position, and the object's velocity includes its speed as well as its direction of motion. The rate of change of the object's velocity gives the acceleration.
Explain Speed,Velocity and Acceleration?When an object's reference frame is chosen, its motion can be precisely characterized. The pace at which an object's position changes while it is moving is referred to as speed. The object's speed indicates how quickly or slowly it is going. But which way is the item traveling? The velocity of an object includes information about its direction of motion. The rate of change of an object's velocity, or the change in velocity per unit of time, is known as its acceleration.
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A current of 0.2A flows through a component with a resistance of 40ohms calculate the potential difference
Answers
Answer:
8V
Explanation:
Given parameters:
Current = 0.2A
Resistance = 40ohms
Unknown:
Potential difference = ?
Solution:
Potential difference is force that drives current in an electric circuit.
According to Ohms law, it is given as;
V = IR
V is the potential difference
I is the current
R is the resistance
Now, insert the parameters and solve;
V = 0.2 x 40 = 8V
Here we have been given with the amount of current which flows through the component that is 0.2A and resistance that is of 40Ω. So we would be using Ohm's law to calculate the potential difference (V).
★ Ohm's Law :
V = IRHere,
V is potential difference R is resistance I is current★ We have :
R = 40Ω I = 0.2A★ Substituting the values :
>> V = 0.2(40)
>> V = (2 / 10) × 40
>> V = 2 × 4
>> V = 8
★ Therefore,
Potential difference is of 8V.Urgent! Two people are biking towards each other. Biker A is moving at 2 m/s east, and Biker B is 10 m east of Biker A, biking towards them at 3 m/s west. How long does it take the two to pass by each other?
Answers
Answer:
see below
Explanation:
I will assume you made a typo error and use 10 km rather than 10 m
Closing speed is 2 + 3 = 5 m/s
they will cover the 10 km (?) in 10 km / 5 m/s = 10000m /5 m/s =
2000 seconds = 33 min and 20 sec
what equation can be used to calculate either wavelength, frequency or speed?
Answers
Answer:
speed = wavelength * frequency
Explanation:
Thenks and mark me brainliest :)
C
A downhill skier was able to move 560 meters in 25 seconds. What is the skie
answer to the nearest tenth of a meter per second.)
The skier's average speed is
m/s
Answers
Explanation:
Speed = distance / time
v = 560 m / 25 s
v = 22.4 m/s
Answer:
22.4
Explanation:
Hope this helps
S= 560m÷25s=22.4m/s
These are the reactant in a chemical equation: 6 CO2 + 6 H2O --> C6H12O6 + 6 O2
Answers
Answer:
Carbon Dioxide and Water.
Explanation:
This is the chemical formula for photosynthesis!
Which of the following describes the mass of an object precisely ? *
2.34 kg
2.345 kg
2 kg
2.3 kg
Answers
Answer:
2.345 would be the most precious because you have more numbers to work with and exact numbers
Which of the following are examples of negative brain plasticity? (Note: You will
choose more than 1.)
1- the human brain has shrank in size due to changes in how we live (accessing
food, housing, etc.).
2- the fact it is easier for children to learn new things than adults.
3. losing a chunk of brain the size of a tennis ball over the last 20,000 years.
4- The fact that negative habits, addictions, and negative self-talk are very difficult
to change.
Answers
Answer:
Negative neuroplasticity. Environmental factors that decrease cognitive reserve, inhibits neuronal connections and causes sparse neuronal connections. The result if that over time the brain becomes less efficient.A lot of the ways in which our brain function degrades that we typically think of as part of “just getting old” is really negative neuroplastic change. As people grow older, they unknowingly contribute to their brain's decline by not using and challenging it as much. For example, a person retires from work.Both positive neuroplasticity and negative neuroplasticity refer to the actual morphological and neurochemical changes that occur in the nervous system and brain between neurons in response to adapting to environmental demands or press (Figure 1; Vance & Crowe, 2006; Vance, Roberson, McGuiness, & Fazeli, 2010).
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Answers
What does the word "atom"
mean in Greek?
A. "tiny particle"
B. "uncuttable"
C. "element"
Answers
Answer:
in greek atom means uncuttable
Answer: A tiny particle
Explanation:
Atoms are the smallest that make up all living matter
A soil with modest CEC of 15 cmol(+)/kg soil has a pH of 6.0. If you took 100 pounds of soil and mixed it with 100 pounds of KCl, the resulting soil would: have a pH near 7.0 have a pH less than 6 have a pH remaining at 6.0 be a moderately alkaline soil (pH 7.5 to 8.5) be calcareous
Answers
When you mix 100 pounds of soil with 100 pounds of KCl, the resulting soil would have a pH near 7.0.
This is because KCl is a neutral salt and does not affect the pH of the soil. The modest CEC of the soil means that it has a relatively low capacity to retain positively charged ions such as K+. Therefore, adding KCl would not significantly affect the pH of the soil. The resulting soil would have a similar pH to the original soil, but it may have a slightly higher pH due to the dilution effect of adding more material. However, the pH increase would be minimal and would not make the soil moderately alkaline (pH 7.5 to 8.5) or calcareous.
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What does an atomic number represent in an atom?
number of protons
number of electrons
number of neutrons
number of protons and neutrons
Answers
The number of protons in an atom is known as the atomic number
Answer:
Number of protons
Explanation:
It is denoted by the letter Z
Two points charges of same charge 2 nc are placed on the x axis at -3cm and 3 cm locations respectively. An electron is initially held stationary on the y axis at 4 cm. If this electron is left free, the speed with which it crosses the origin is
Answers
Let P, which is located at a distance of x to the left of the 1nC charge in the picture, have a potential of zero. x=0.33m
What does it mean to be capable?When you suggest something or someone has potential, you're implying that they possess the skills or traits needed to succeed or be of service in the future. The young man is quite promising. Every student is given individualized attention at the school, and every effort is made to help them reach their full potential.
What sort of example might that be?Everything that is possible is a possibility. Doctors are very excited about the possible benefits of the new medication. It is said by opponents that the factory would threaten the environment. The institution's potential for growth. According to some, he might seek office.
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