Answer:
C maybe
Explanation:
A bungee jumper hangs from a bungee cord with zero velocity. If the bungee cord has a spring constant of 18 N/m and the jumper has a mass of 113 kg, he streched 6.27 m.
What is Zero velocity?The zero-velocity surface is a concept that relates to the N-body problem of gravity. It represents a surface a body of given energy cannot cross, since it would have zero velocity on the surface.
It was first introduced by George William Hill. The zero-velocity surface is particularly significant when working with weak gravitational interactions among orbiting bodies.
For the purpose of locating Lagrange points, the zero-velocity surface is another crucial factor. In the rotating coordinate system, these points correspond to places where the apparent potential is extreme.
Therefore, A bungee jumper hangs from a bungee cord with zero velocity. If the bungee cord has a spring constant of 18 N/m and the jumper has a mass of 113 kg, he streched 6.27 m.
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How long does it take a cougar to run 170 meter if it run 5m/s?
Answer: 34 seconds
Explanation:
170m/5m=34seconds
Answer:
34 seconds
Explanation:
Because if you divided meter per second by how far it will go there is your answer.
Does food have energy?
Answer:
chemical energy that goes for all food actually
Explanation:
A ski jumper has a mass of 59.6 kg. She is moving with a speed of 23.4 m/s at a height of 44.6 meters above the ground. Determine the total mechanical energy of the ski jumper. Assume negligible air resistance and friction. (3 pts)
Hello!
Use the formula:
M = k * p
Data:
M = Mechanic energy
k = Kinetic energy
p = Potencial energy
Descomposing:
M = (0,5*mv²) + (mgh)
Replacing:
M = (0,5 * 59,6 kg * (23,4 m/s)²) + (59,6 kg * 9,81 m/s² * 44,6 m)
M = 16317,28 J + 26076,54 J
M = 42393,82 J
The mechanic energy is 42393,82 Joules.
pls help i’m in a test and don’t know what to do
Answer:
I think its C, even with the typo.
In order to have more power you would need to do the same about of work
Answer:
....
Explanation:
What is a displacement can filled with when used to measure the density of an irregular shape?
Answer:
water, it's usually because it's just the easiest to use, but yeah it's water
HELP ME PLEASE!!!!!! A couch is pushed with a force of 79 N and moves a distance of 7 m across the floor. How much work was done in moving the couch?
A car travles a distance of 540km in 6 hours. What speed did it travel at?
A mover slides a refrigerator weighing 650 N at a constant velocity across the floor a distance of 8.1 m. The force of friction between the refrigerator and the floor is 230 N. How much work has been performed by the mover on the refrigerator?
Answer:
1863 J
Explanation:
F = Force moving the object
f = Frictional force = 230 N
The forces in the horizontal direction have the force balance
[tex]F-f=0\\\Rightarrow F=f\\\Rightarrow F=230\ \text{N}[/tex]
So, the force by which the object is being pushed is [tex]230\ \text{N}[/tex]
s = The displacement of the object = 8.1 m
Work done is given by
[tex]W=Fs\\\Rightarrow W=230\times 8.1\\\Rightarrow W=1863\ \text{J}[/tex]
The work done by the mover is 1863 J.
A tennis ball is hit with a tennis racket. The force of the racket on the ball compared to the force of the ball on the racket is
1- smaller
2- Larger
3- The same
The force of the racket on the ball compared to the force of the ball on the racket is the same. So, option (3) is correct.
What is force?The definition of force in physics is: The push or pull on a mass-containing item changes its velocity.
An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. The application of force is the location at which force is applied, and the direction in which the force is applied is known as the direction of the force.
Every time one object applies force to another, the other object applies an equal and opposing force to the first.
According to Newton's third law, there is an equal and opposite reaction to every force (action) in nature. When object A pulls on item B, object B pulls back on object A with an equal and opposing force. In other words, interactions lead to forces. So, the force of the racket on the ball compared to the force of the ball on the racket is the same.
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An Amtrak going 250m/s comes to a stop in 12s. What is the
acceleration?
Answer:
[tex]a=\frac{v-u}{t} \\a = \frac{0-250}{12} = -20.83 m/s[/tex]
Explanation:
you mean deceleration right ? because the acceleration is 250m/s
Plz di all plz i will give brainest and thanks to best answer do it right
Answer:
area 4
Explanation:
area 4 has low pressure
10. A tennis ball rolled off the edge of a table that has a height of 1,00 m.
The ball took 0.45 s to hit the ground 0.72 m from the table. What was the horizontal velocity
of the ball as it rolled off the table?
Answer:
The answer is "[tex]1.6\ \frac{m}{s}[/tex]"
Explanation:
Distance= 0.72 meter
time= 0.45 second
The formula for horizontal velocity:
[tex]horizontal \ velocity = \frac{distance}{time}\\\\[/tex]
[tex]=\frac{0.72}{ 0.45}\\\\= 1.6 \ \frac{m}{s}\\\\[/tex]
*CAN SOMEONE HELP ME 100 POINTS*
Answer:
its the For a fossil to form, several conditions have to be met. First of all, the animal had to live in the given area! Animals live in many environments on Earth, but not everywhere. The water above many lake bottoms and many areas of the deep ocean bottom are stagnant. The bottom water is never exchanged with surface waters, so the water contains no dissolved oxygen. Animals cannot live without oxygen, so no animals live there. In these situations, the only possibility of fossilization is if a fish or other swimming animal dies in oxygen-rich waters above, sinks down into the stagnant muddy bottom, and is buried by sediments.
Explanation:
its the For a fossil to form, several conditions have to be met. First of all, the animal had to live in the given area! Animals live in many environments on Earth, but not everywhere. The water above many lake bottoms and many areas of the deep ocean bottom are stagnant. The bottom water is never exchanged with surface waters, so the water contains no dissolved oxygen. Animals cannot live without oxygen, so no animals live there. In these situations, the only possibility of fossilization is if a fish or other swimming animal dies in oxygen-rich waters above, sinks down into the stagnant muddy bottom, and is buried by sediments.
Make a quantitative graph for the motion of the two cars
Kiran's mother placed a candle in the bowl as shown and lit it . A little while later , kiran opened a bottle of pepsi and poured it quickly into the bowl .What will happen ?
Answer:
The candle stick flame will burn brighter.
Explanation:
I majored in Physics.
What is the supply voltage?
Answer:
[sə′plī ‚vōl·tij] (electricity) The voltage obtained from a power source for operation of a circuit or device.
Explanation:
hope this helps :)
how will the gravitational force between two objects change if they are moved to twice their original distance from each other
A 2 times more force
B 4 times more force
C 1/2 of the force
D 1/4 of the force
The gravitational force between two bodies of mass M and m, separated by a distance r, has a magnitude F given by the universal law of gravitation,
F = G M m / r ²
where G is the universal gravitation constant (whose value is unimportant for this question).
If you double the distance r, then the new force has magnitude
G M m / (2r ) ² = 1/4 • G M m / r ²
i.e. 1/4 of the original force's magnitude. So the answer is D.
3. How do the individual forces compare when the rider experiences a sensation of
being heavier than his normal weight? What is the acceleration direction when this
occurs?
Answer:
When the acceleration of the elevator is going upward, the rider experiences a sensation of being heavier than his normal weight due to the upward normal force being more than the rider's weight.
When the elevator is accelerating downward, the person feels lighter due to the downward normal force being less than the person's weight.
What are the characteristics of elevator?A person riding in an elevator subjected to a series of unbalanced forces depending on the direction the elevator is travelling.
Two forces are acting on the person, the force of gravity and the upward normal force from the elevator.
When the elevator is going upwards with acceleration a, the person feels heavier than his normal weight, due to the upward normal force being greater than the person's weight.
N = mg + ma
When the elevator is moving downwards with acceleration a, the person feels lighter due to the downward normal force being less than the person's weight.
N = mg - ma
However, when the elevator is moving up or down at constant velocity ie. acceleration a = 0, the person experience a normal force equal to weight.
N = mg
When the elevator is moving downwards with acceleration a = g, the person experiences weightlessness.
N = (mg - mg) = 0
When the elevator is accelerating downward, the person feels lighter due to the downward normal force being less than the person's weight.
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A box is 30cm wide 40cm long and 25cm high calculate the area of its base
Answer:
1200cm^2
Explanation:
length of the box (L) = 40 cm
width of the box (W) = 30 cm
Area of the base is obtained as the area of the rectangle. Recall that the base of a box is a rectangular shape.
Therefore;
Area of base = 40cm * 30cm =1200cm^2
28. A student notices that when a weight is hung on a spring, the spring stretches. She decides to conduct an experiment to determine the relationship between the amount of weight
placed on a spring and the distance the spring stretches. She has five different weights: 25 9,50 9, 75 9, 100 g, and 125 g. She selects a weight, hangs it on the spring, and
measures how far the spring stretches
What is the independent variable in this experiment?
length of unstretched spring
O distance the spring stretches
weight hung from the spring
O temperature of the spring
Answer:
weight hung from the spring
Explanation:
An "independent variable" refers to the variable that is being changed or manipulated in an experiment. This is being done in order to check its impact on the "dependent variables." The independent variable does not rely on any other variables.
In the experiment above, the independent variable is the "weight." This variable is being manipulated in order to know how far the spring will stretch. This is the reason why there are five different weights, which means there will be five different distances expected to be covered by the spring.
What is the spreading out of light into different colors called?
1 transmission
2 dispersion
3 reflection
4 refraction
Answer:
Dispersion
Explanation:
dispersion
[diˈspərZHən, diˈspərSHən]
NOUN
the action or process of distributing things or people over a wide area.
"some seeds rely on birds for dispersion"
the state of being dispersed over a wide area.
"the general dispersion of Hellenistic culture"
ecology
the pattern of distribution of individuals within a habitat.
(Dispersion)
another term for diaspora.
a mixture of one substance dispersed in another medium.
physics
the separation of white light into colors, or the separation of any radiation according to wavelength.
statistics
the extent to which values of a variable differ from a fixed value such as the mean.
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A 0.040 kg dart is thrown with a momentum of +1.5 kg m/s at a dart board. The dart took 0.030 seconds to stop when it struck the board. What is the magnitude of the force the dart exerted on the board?
A)1.3 N
B) 15 N
C) 50 N
D) 60N
Answer:
Explanation:
The answer is C
The magnitude of the force the dart exerted on the board is 50 Newton.
What is force?The definition of force in physics is: The push or pull on a mass-containing item changes its velocity.
An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. A spring balance can be used to calculate the Force. Newton is the SI unit of force.
Given parameters:
Mass of the dart: m= 0.040 kg.
Momentum of the dart: p = + 1.5 kg m/s.
Time required to stop = 0.030 seconds.
Hence, the magnitude of the force the dart exerted on the board is =
change in momentum/time
= (1.5 - 0.040×0)/0.030 Newton
= 50 Newton.
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URGENT PLEASE HELP ME ASAP
What is delayed gratification?
Being slow to acknowledge your gratitude
Eating something later that you could have eaten immediately
Enjoying the pleasure of an immediate reward, so that you can be confident later
Denying the pleasure of an immediate reward so that you can receive a greater reward later
Answer:
The correct answer is - Denying the pleasure of an immediate reward so that you can receive a greater reward later.
Explanation:
Delayed gratification is a gratification method or the process that helps in improving self-control and helps in goals that take time to achieve. It is referred to as the ability to stop or prevent oneself from something more rewarding or pleasurable immediately, in order to get something more pleasurable or rewarding later.
For instance, an individual watch tv before a big exam or studying for the exam so can watch tv after getting good grades.
The correct answer is - option D.
6. You are holding a rock with a mass of 0.30 kg. You let the rock drop from your hand. It hits the ground 0.75
seconds later. How fast was the rock moving right before it hit the ground? For credit, show work in detail.
Answer:
v = 14.7m/s
Explanation:
When the rock was at the top of cliff it had only Potential Energy and no Kinetic Energy but soon as the rock hit the ground all the Potential Energy converted into Kinetic Energy so by the Law of Conservation of Energy
[tex]Potential\ Energy = Kinetic\ Energy\\mgh=\frac{1}{2}mv^2\\\\v^2=\frac{2mgh}{m} \\\\v^2=2gh[/tex]
because all of that potential energy got converted into kinetic energy so we use the following formula as we need to calculate the velocity (v)
[tex]Potential\ Energy = Kinetic\ Energy\\mgh=\frac{1}{2}mv^2\\\\v^2=\frac{2mgh}{m} \\\\v^2=2gh[/tex]
here we know [tex]g = 9.8m/s^2[/tex] because the rock was under free fall motion so it had acceleration of 9.8 but we do not the height which is h but we do know the formula:
[tex]Velocity=\frac{Displacement}{Time}[/tex]
the height h is the displacement so we replace height with the following:
[tex]Velocity=\frac{Displacement}{Time}\\\\Displacement=Velocity*Time\\h=vt[/tex]
now, insert h = vt in the above equation
[tex]v^2=2gh\\\\v^2=2g(vt)\\v^2=2vgt\\\\\frac{v^2}{v} =2gt\\\\v=2gt\\v=2(9.8)(0.75)\\v=14.7m/s[/tex]
One type of potential energy is gravitational potential energy. What is necessary for an object to have gravitational potential energy?
Gravitational potential energy is energy an object possesses because of its position in a gravitational field. The most common use of gravitational potential energy is for an object near the surface of the Earth where the gravitational acceleration can be assumed to be constant at about 9.8 m/s2. Since the zero of gravitational potential energy can be chosen at any point (like the choice of the zero of a coordinate system), the potential energy at a height h above that point is equal to the work which would be required to lift the object to that height with no net change in kinetic energy. Since the force required to lift it is equal to its weight, it follows that the gravitational potential energy is equal to its weight times the height
Gravitational potential energy is the potential energy with respect to the gravitational force. To possess gravitational potential energy, the object to be placed in a position in the gravitational field.
What is potential energy?Potential energy of body is the energy generated by virtue of the position of the body. Whereas kinetic energy is generated by virtue of its movement.
Potential energy and kinetic energy together called as mechanical energy. The potential energy p is mathematically expressed as p = mgh. Where g s gravity, h is height and m is the mass.
The gravitational potential energy is arised in an object due the position in gravitational field. It changes with the change in position and change in height from the ground. A change in mass also alter the gravitational potential energy.
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Please Help! If you dont know the answers please dont answer! i will give you brrainlist! if you complete correctly!
Answer:
motion; position; reference; speed; velocity; forces; gravity; friction; direction; acceleration (in order)
Explanation:
What is the frequency of motion of a 2.0m long pendulum?
A) 0.35 Hz
B) 0.61 Hz
C) 1.3 Hz
D) 2.84 Hz
Answer: it’s c
Explanation:
4. A car travels 3 km due North, then 5 km East Represent
these displacements graphically and determine the resultar
displacement
Answer:
x^2 =5^2+3^2
25+9
=
[tex] x = \sqrt{34} [/tex]
Answer:
3kmIsquare +5km isquare9km isquare + 25km isquare
34km isquare
In thermodynamics, work is typically done by
O A. solids
O B. energy
O C. gases
O D. liquids
Answer:
C. gases
Explanation:
I don't really know how to explain it work is just typically done by gases. Plus this is the correct answer for a p e .x
