water and carbon dioxide
If a car moves with a constant acceleration, can you conclude that there are no forces acting on it?
Can someone pls help, thank you in advance!
What is an example of a force applied at an angle to displacement
Answer:
an object sliding down hill
Explanation:
On a slope, the force applied is due to gravity. Its direction is straight down. If the object is sliding down the hill, its displacement is at an angle to the applied force. The angle of displacement will depend on the steepness of the hill.
Given w= 4+,- 0.02 A=2.0+,-0.2 and 3.0+,-0.6 what is the value of w\ A y square
Explanation:
w = (4.52 ± 0.02) cm, x = ( 2.0 ± 0.2) cm, y = (3.0 ± 0.6) cm. Find z = x + y - w and its uncertainty.
z = x + y - w = 2.0 + 3.0 - 4.5 = 0.5 cm
Dz = Dx + Dy + Dw = 0.2 + 0.6 + 0.02 = 0.82 rounding to 0.8 cm
So z = (0.5 ± 0.8) cm
Solution with standard deviations, Eq. 1b, Dz = 0.633 cm
z = (0.5 ± 0.6) cm
Notice that we round the uncertainty to one significant figure and round the answer to match.
a ball is swung in a vertical circle such that at one point along its circular path the forces exerted on the ball can be represented by the free body diagram. the magnitude of the tension force exerted on the ball, t, is twice that of the force due to gravity exerted on the ball from earth, fg. what is the location of the ball, and what is the magnitude of the centripetal acceleration of the ball?
Location of the ball is top of the circle and acceleration is 3g.
Since tension force is more, surely ball is having net force upward and hence, the location of the ball in this case is top of the circle.
Any object that moves in a circle has an acceleration vector towards the center of that circle. This is known as Centripetal acceleration.
total force/ net force when ball is top of the circle is sum of tension force and gravity force.
\(F_{net\) = T + mg
Because of this net force, there is centripetal acceleration towards the center.
so, T + mg = ma
2mg + mg = ma
3mg = ma
a = 3 × force of gravity
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A 16-year-old employee working for Southern Virginia College's (SVC) bookstore during the summer months is helping prepare for Fall sales. It's a good way to make extra money, and the teen is saving for a car.
Books from one supplier are shipped to the SVC bookstore in large crates equipped with rope handles on all sides. On one occasion, the teen momentarily pulled with a force of 713 N at an angle of 35.8° above the horizontal to accelerate a 114-kg crate of books. The coefficient of friction between the crates and the vinyl floor is 0.541.
Determine the acceleration experienced by the crate in m/s2. Use the approximation g ≈ 10 m/s2.
Answer: ___________ m/s2 (rounded to the hundredths or thousandths place)
The acceleration experienced by the crate is approximately 0.844 m/s
How to solve for the accelerationWeight of the crate:
Weight = mass × acceleration due to gravity
Weight = 114 kg × 10 m/s^2
Weight = 1140 N
Force of friction:
Force of Friction = coefficient of friction × normal force
Force of Friction = 0.541 × 1140 N
Force of Friction ≈ 616.74 N
Net force:
Net Force = Applied Force - Force of Friction
Net Force = 713 N - 616.74 N
Net Force ≈ 96.26 N
Acceleration:
Acceleration = Net Force / mass
Acceleration = 96.26 N / 114 kg
Acceleration ≈ 0.844 m/s
Therefore, the acceleration experienced by the crate is approximately 0.844 m/s
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Are there more old rocks or more young rocks, why?
Explanation:
On Earth, older rocks predominate over younger rocks in general. This is due to the fact that rocks created earlier in the planet's history have had more time to accumulate and that the geological history of the Earth spans billions of years.
The oldest rocks on Earth are thought to have been formed roughly 4 billion years ago, which is nearly as old as the planet itself. These ancient rocks, which may be discovered in many different places on Earth, offer important new information about the processes that sculpted the Earth's surface and the planet's early genesis.
New rocks have continuously been created over time as a result of geological processes such weathering, erosion, volcanic activity, and tectonic movements that continuously modify the Earth's surface. However, compared to other processes, the rate of rock production is somewhat modest to the geological timescale. It takes significant amounts of time for new rocks to form from processes such as solidification of lava, deposition of sediments, or the gradual transformation of existing rocks through heat and pressure.
Therefore, the vast majority of rocks on Earth are older rocks that have formed and accumulated over billions of years. Younger rocks, though still present, are comparatively fewer in number due to the limited amount of time that has passed since their formation.
it is isn't good to use the local units like Mana , Pathi etc in international measurement. why?
Answer:
because they are not standard unit(accepted globally)
Explanation:
hope its help
Because outside of your local group, nobody will know what you're talking about.
My people originally used the sha'ah, yom, and khelek for time, the amah for length, the tchum shabbat for distance, and the epha, omer, baytsa, log, and kazayit for volume.
See what I mean ?
A 2.0 kg melon is balanced on a circus performer's head. An archer shoots a 50.0 g arrow at the melon with a speed of 30 m/s. The arrow passes through the melon and emerges with a speed of 18 m/s. Find the speed of the melon as it flies off the performer's head.
The speed of the melon as it flies off the performer's head is 0.3 m/s
Law of conservation of momentum?The law of conservation of momentum states that for a system of colliding bodies, the total momentum before the collision is equal to the total momentum after the collision, provided there is no net external force acting on the bodies.
To find the speed of the melon, we use the formula from the law of conservation of momentum.
Formula:
mu+m'u' = mv+m'v'............ EquationWhere:
m = mass of the melonu = initial velocity of the melonm' = mass of the arrowu' = initial velocity of the arrowv = final velocity of the melonv' = final velocity of the arrow.From the question,
Given:
m = 2 kgm' = 50 g = 0.05 kgu = 0 m/s (at rest)u' = 30 m/sv' = 18 m/s.Substitute these values into equation 1
(2×0)+(0.05×30) = (0.05×18)+(2×v)0+1.5 = 0.9+2v2v = 1.5-0.92v = 0.6v = 0.3 m/s.Hence, The speed of the melon as it flies off the performer's head is 0.3 m/s.
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Define colinear forces
Answer: Collinear forces are forces that have a common line of action, i.e. the line of action of the forces lies along a single straight line.
Explanation:
Which branch of science may be facing a "crisis of credibility"? experimental science computational science theoretical science interpretive science
Answer: Computational science
Explanation:
When something is going through a credibility crisis, it means that the data and results that it gives out are not reliable.
This seems to be the case with computational science as some scientists argue that it is not providing them with reliable information. Some other scientists have offered solutions to this by stating that for computational science to work, it needs access to big data so that it can run relevant analysis on the data to produce reliable results.
Answer:
computational science
Explanation:
big brain please give brainlist
2 Which is true of a parallel circuit?
o The currents in each separate branch add up to the total current that leaves
the cell.
O
The current is the same at each point in the parallel circuit.
The potential difference across each lamp in a parallel circuit adds up to give
the potential difference of a battery or cell.
O
The circuit has a single closed loop.
Answer:
fxb
c
Explanation:bfffffffff
How does the interaction of a nonelectrolyte and water differ from the interaction of an electrolyte and water? give examples of each.
The interaction of a nonelectrolyte and water differs from the interaction of an electrolyte and water because nonelectrolytes do not conduct current while electrolytes can conduct current.
The solution that does not let the current pass through any state either liquid or molten is called nonelectrolyte.
For example, sugar and alcohol are nonelectrolytes.
On the contrary, electrolytes are those mediums, compounds, or substances that allow electric charges to pass through them.
In this way they conduct electricity.
For example, when an ionic substance dissolved in water forms an ionic solution it let the current pass through such as NaCl, HCl, etc. Sodium chloride dissolves in water forming ions of sodium and chloride ions and making the solution electro conductive.
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A typical ion channel radius is about 1 nm (nanometer), and the thickness of the cell membrane is about 7 nm. The concentration of Na+ ions inside a mammalian heart cell is about 0.6 ions/nm3, and in the fluid surrounding the cell is about 6.0 ions/nm3. The diffusion constant for ions is about 109 nm2/s (nanometers2/second). If the channel were just an open cylinder, how many ions per second would flow through the channel and in which direction? Is the flow from the inside to the outside or from the outside to the inside?
The estimated rate of Na+ ions flowing through the channel is approximately 5.4 x\(10^{13}\) ions per second, from the outside to the inside of the cell.
What is Ion?
An ion is an atom or molecule that has gained or lost one or more electrons, resulting in an imbalance between the number of protons and electrons.
The area of the channel (A) can be calculated as the surface area of a cylinder:
A = 2πr(r + d)
Substituting the given values, we get:
A = 2π(1 nm)(1 nm + 7 nm) = 100 nm^2
The concentration gradient (∆C) is the difference between the concentrations inside and outside the cell:
∆C = C2 - C1 = 6.0 ions/nm^3 - 0.6 ions/\(nm^{3}\) = 5.4 ions/\(nm^{3}\)
Now we can use Fick's law of diffusion to calculate the rate of ion flow (J):
J = -D * A * ∆C
Substituting the values we have:
J = - (10^9 nm^2/s) * (100 nm^2) * (5.4 ions/\(nm^{3}\))
J = -5.4 * \(10^{13}\) ions/s
The negative sign indicates that the flow of ions is from the outside to the inside of the cell, as ions are moving down the concentration gradient from higher concentration outside the cell to lower concentration inside the cell.
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Type the correct answer in the box. Spell all words correctly. Complete the sentence using the correct term. A ______enforces federal and state laws related to environmental and natural resources. Reset Next reserved.
Answer:
Environmental Protection Agency (EPA)
Explanation:
In the United States of America, the agency which was established by US Congress and saddled with the responsibility of overseeing all aspects of pollution, environmental clean up, pesticide use, contamination, natural resources and hazardous waste spills is the Environmental Protection Agency (EPA). Also, EPA research solutions, policy development, and enforcement of regulations through the resource Conservation and Recovery Act.
The Environmental Protection Agency (EPA) is the governmental agency set up to ensure that various industries, factories and people comply with laws and regulations concerning the environment i.e it is an agency established to oversee and enforce environmental compliance by the people.
Hence, the Environmental Protection Agency (EPA) is saddled with the responsibility of enforcing federal and state laws related to environmental and natural resources.
The weight of a body varies from location to location. Where would the weight of the body be least?. Single choice.
Explanation:
The weight of a body depends on the acceleration due to gravity at a particular place.
Weight is a form of force on a body but this type depends on the gravitational force from places to places.
Weight = mass x acceleration due to gravity.
Assuming that mass is constant, the acceleration due to gravity is directly proportional to the weight.
The higher the acceleration due to gravity of a body, the more it weighs and vice - versa.
Your physics teacher crumples a piece of paper into a ball and releases it from rest 2. 0 m from the ground. How long does the ball take to hit the ground?.
When the ball is released from rest 2m from the ground, it will hit the ground at 0.63 seconds.
Here, we will use free fall kinematics equations.The ball hits the ground due to gravity of earth. we use equation of motion and will find time after which ball hit the ground. There are 3 main equations of motion. The paper ball falls from the rest, so the initial velocity will be 0.
\(s = ut + \frac{1}{2} a {t}^{2} \)
S is the height
u is the initial velocity
g is the gravity (9.81 m/s²)
t the time
Now, the height will be 2m, u = 0
and we have to solve it for t
\(2 = 0 \times t + \frac{1}{2} \times 10 \times {t}^{2} \)
\(2 = 5 {t}^{2} \)
\( {t}^{2} = \frac{2}{5} \)
t = 0.63
t = 0.63 seconds.
hence, the ball will hit the ground after 0.63 seconds of it's release.
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The electromagnet in a motor must rotate consistently in just one direction to
transform electrical energy into mechanical energy. What causes this
rotation?
A. The terminals of the battery frequently switch from positive to
negative.
B. The commutator causes the loop of wire to keep turning in one
direction.
C. The commutator frequently reverses the direction of the current in
the loop of wire.
D. The poles of the permanent magnets keep switching between
north and south.
This is because the commutator frequently reverses the direction of the current in the wire loop, which causes the electric motor to rotate in one direction.
What is the mechanism and how to explain it?A device that utilizes the electromagnetism principle is called an electromagnet. The force created when the electric and magnetic fields interact is known as electromagnetism. The electric motor is an illustration of an electromagnet.
Suppose, if our wire is bent into a square, U-shaped loop, the magnetic field will appear to have two simultaneous wires running through it. Through the wire, one of them removes the electric current from us, while the other one restores it. The two wires will move in different directions, according to Fleming's Left-Hand Rule, because the current in the wires travels in opposite directions. In other words, one of the wires will move higher and the other downward when we turn on the electricity.
The commutator regularly switches the direction of the current flowing through the wire loop, which causes the motor in an electromagnet to rotate in one way.
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Chemical bonds are formed from the attractive force of Atoms for electrons. What is the force called.
A. Ionization energy
B. Attraction of opposites
C. Chemical bonding
D. Electronegativity
What is your speed if you travel 7564 km in 23 hours? Convert this to miles per hour.
Answer:
[See Below]
Explanation:
Your average speed would be 204.35 mph.
Why heavy vehicles usually have low velocity but possess high kinetic energy
The kinetic energy is high because, the mass of the object is large and thus has a great momentum and its velocity low because it has a large mass.
We know that kinetic energy of an object K = 1/2mv² where m = mass of the object and v = velocity of the object and its momentum, p = mv
For a given value of kinetic energy, the mass of the object m = 2K/v². This implies that m ∝ 1/v².
So, as the mass of the object increases, its velocity decreases.
So. an object with large mass has low velocity while an object with small mass has high velocity.
Also, the kinetic energy, K = 1/2mv². So, K ∝ mv². So, if m is large and v is small, the product mv² is large and thus K = 1/2mv² is high.
So, the kinetic energy of heavy vehicles is high because, the mass of the object is large and thus has a great momentum and its velocity low because it has a large mass.
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What was Marie's speed from point A to point B, in miles/minute?
Answer:
40m
Explanation:
40m
The precision of a balance is ±0.02 g. The accepted value for a measurement is 26.86 g. Which measurement is in the accepted range?
\(\sf{ [26.84, 26.88] }\)
Explanation:
The precision of a balance is ±0.02 g.
The accepted value for a measurement is 26.86 g.
The accepted range is:=[26.86-0.02, 26.86+0.02]= [26.84, 26.88]Figure 1.18 shows an oscillating pendulum. If the time taken for the pendulum to swing from A to C to B is 3 s, what is the period of the pendulum?
Answer:
a
Explanation:
The lowest note on a piano
is 27.5 Hz. If strings with
v = 84,7 m/s are used, how long
should the piano string be?
(Unit = m)
Answer:
My teacher said 36m when I asked her
Explanation:
HOPE THIS HELPS!!
1- An object of weight 2N is fired upwards to a height of 5 m.
Calculate gain in potential energy.
Answer:
PE = 98
Explanation:
PE =mgh
PE= 2 x 9.8 x 5
PE = 98
I hope this helps a little bit.
at what radius does an electron in the 5 th energy level orbit the hydrogen nucleus? express your answer in nanometers.
The energy levels of a hydrogen atom are given by the equation E = -13.6 eV / n^2, where E is the energy, n is the principal quantum number, and -13.6 eV is the ionization energy of hydrogen.
For the 5th energy level (n = 5), we can calculate the radius of the electron's orbit using the Bohr radius formula:
r = (0.529 Å) * n^2 / Z,
where r is the radius, n is the principal quantum number, and Z is the atomic number (which is 1 for hydrogen).
Converting the Bohr radius from angstroms (Å) to nanometers (nm), we have:
r = (0.529 Å) * (5^2) / 1 = 2.645 Å.
To express the radius in nanometers, we convert the answer from angstroms to nanometers:
r = 2.645 Å * (0.1 nm/Å) = 0.2645 nm.
Therefore, the electron in the 5th energy level of a hydrogen atom orbits the nucleus at a radius of approximately 0.2645 nm.
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Can a apple fall from a tree and not break open?
Well as you've seen before most likely, an apple can fall right off a tree, and stay perfectly fine. its all dependent on the variables. What angle is the apple falling at? Whats the speed, height, even the size of the apple? We must take into aware anything can happen, but its all behind the variables.
Brainliest if helpful
P.S Fact Check with the second person who just answered
Answer:
yes
Explanation:
i had an apple tree and it happens all the time most often they don't break open.
the equation of a wave to a wave to y=0·0055m The equation of a wave is y=0·005 Sin [x (0.5x - 200t) where x and y are in metres and it is in seconds. what is the velocity of the wave?
the velocity of the wave is 400m/s
The formula for the velocity of the wave is, V = w/k
where , w is the coefficient of t and k is the coefficient of x
now putting values we get, v = 200/0.5 = 400
Hence the velocity of the wave is 400 m/s
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a current of 12 A flows through a fan for 30 minutes.How many charge flows through then fan during this time?
Answer:
Q=21600C
Explanation:
Q=It.
Data
I=12A
t=30min
convert time from minutes to second
t=60*30
=1800s
Q=?
Q=It
=(12A)*(1800s)
Q=21600C
a) Radioactive iodine is used to treat certain thyroid conditions by therapeutically damaging tissue. A single pill is produced with 4 x 1014 atoms of the radioactive isotope, which has a half life of 8 days.b) Although the iodine in the pill constantly decays, it is still usable as long as it contains at least 1.1 x 1014 atoms. What is the maximum delay before the pill is no longer usable in days?
The maximum delay before the pill is no longer usable can be calculated using the concept of half-life. The half-life of the radioactive isotope is 8 days, which means that after 8 days, half of the initial number of atoms will decay.
Therefore, if the initial number of atoms in the pill is 4 x 1014, after 8 days, it will be reduced to 2 x 10^14 atoms. After another 8 days, it will be reduced to 1 x 10^14 atoms, which is the minimum required for the pill to be still usable. Therefore, the maximum delay before the pill is no longer usable is 16 days (2 half-lives), after which the number of radioactive atoms will be less than the required minimum.
Radioactive iodine, a treatment for thyroid conditions, works by therapeutically damaging tissue. A single pill contains 4 x 10^14 atoms of the radioactive isotope with a half-life of 8 days. To remain usable, it must have at least 1.1 x 10^14 atoms.
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