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A 0.19-kg stone is held 1.2 m above the top edge of a water well and then dropped into it. The well has a depth of 5.6 m.
(a) Taking y = 0 at the top edge of the well, what is the gravitational potential energy of the stone-Earth system before the stone is released? (No Response)
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(b) Taking y = 0 at the top edge of the well, what is the gravitational potential energy of the stone-Earth system when it reaches the bottom of the well? (No Response)
(c) What is the change in gravitational potential energy of the system from release to reaching the bottom of the well? (No Response)
A 0.35kg mass suspended from a spring moves with simple harmonic motion. At the instant mass is displaced from equilibrium by -0.105 m, what is its acceleration? (The spring constant is 11.8N/m)
A 73 long metal string under 35.5 tension has a linear mass density 2.20×10?4, Find the frequencies of the first three harmonics
A person is 1.4 m tall, and is standing at 2.0 m in front of a plane mirror. What is the minimum length of the mirror if the person is now 3.5 m from the mirror
According to Equation 20.7, an ac voltage V is given as a function of time t by V = Vo sin 2ft, what is the smallest value of the time at which the voltage equals one-half of the peak-value
when jim abd rob ride bicycles, jim can only accelerate at three quarters the acceleration of Rob. Both start from rest at the bottom of a long straight road with constant upward slope. If rob takes 5.7 minutes to react the top, how much earlier s..
The coefficient of kinetic friction between a 20 Kg box and the floor is 0.40. How much work does a pulling force do on the box in pulling it 8.0 m at the constant speed? The pulling force is directed 390 above the horizontal.
An airplane flies 200 km due west from city A to city B and after that 295 km in the direction of 26.5° north of west from city B to city C.
The Dyson sphere is an hypothetical spherical structure centered around a star. Inspired by a science fiction story, What is the net gravitational force Fin on a unit mass located on the inner surface of the Dyson sphere described in Part A
Someday in the future, an astronaut on Mars (where gMars = 3.71 m/s^2) might lean over the edge of 25.0-meter-tall spacecraft , What will be the package's speed when it strikes the ground
A small rock with mass 0.200 kg is fastened to a massless string with length 0.750 m to form a pendulum. What is tension in the string at the lowest point
A 200g ball on a 60 {cm}-long string is swung in a vertical circle about a point 200 {cm} above the floor.
Two charged bodies exert a force of .145N on each other. If they are now moved so they are one fourth as far apart, what force is exerted.
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