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A 0.45 kg mass sliding on a horizontal frictionless surface is attached to one end of a horizontal spring (with k = 750 N/m) whose other end is fixed. The mass has a kinetic energy of 9.0 J as it passes through its equilibrium position (the point at which the spring force is zero).
At what rate is the spring doing work on the mass as the mass passes through its equilibrium position?
At what rate is the spring doing work on the mass when the spring is compressed 0.077 m and the mass is moving away from the equilibrium position?
a 0.1kg ball moving at 10 m/s collides with a 1 kg block that is initially at rest. Find the ratio of the kinetic energies of the two objects after collision
The question below was asked before, but this seems to ignore that the launching machine should have static friction as well, How far would the launching machine slide on the Moon
A heat engine operates between a cold reservoir at 10 C and a hot reservoir at 200 C. how much heat must be exhausted as waste
An archer pulls the bowstring back for a distance of 0.470 m before releasing the arrow. What is the elastic potential energy of the drawn bow
a person of mass Mp is standing in an elevator of Me suspended from the top of a building by a spring with spring constant k. what is the equilibrium constant of the spring
White light is incident at 45 degrees from air onto a 60-60-60 prism in which red light has n=1.500 and violet has n=1.600. Find the total deviation of each and the dispersion
A rock falls off the back bumper of a truck which is traveling at 26.8 m/s. The rock hits the ground 0.387 seconds after it leaves the bumper. How high above the road is the trucks bumper
A 76-kg ice hockey player standing on a frictionless sheet ofice throws a 5.6-kg bowling ball horizontally. With what speed does the hockey player recoil
Gas in a cylinder similar to the one shown in the figure moves a piston with area 0.201 m^2 as energy is slowly added to the system. If 2.30 x10^3 J of work is done on the environment and the pressure of the gas in the cylinder remains constant at 1...
Susie is out fishing on a calm, sunny day. She hooks an old tire that is resting on the lake bottom, and hauls it into her boat
A startled armadillo leaps upward rising 0.550 m in the first 0.203 is. (a) What is its initial speed as it leaves the ground? m/s (b) What is its speed at the height of 0.550 m? m/s (c) How much higher does it go?
A generator rotates at 88Hz in a magnetic field of 2.6×10?2T . It has 1200 turns and produces an rms voltage of 120V and an rms current of 57.0A, What is the area of each turn of the coil
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