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A 30 kg box rests at the top of 30 degree incline before it is released. The top of the incline is 5.0 m above the floor.
a) How fast will it be moving when it reaches the bottom of the ramp if the surface is frictionless?
b) Based on part (b), how fast will the box are moving when it reaches the bottom of the ramp with friction?
c) How much energy will be dissipated if the surface is not frictionless and the kinetic friction fk is 25 N?
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A man in a restaurant asked a waiter for a juice glass, a dinner plate, water, a match, and a lemon wedge. How did the waiter get the water into the glass
An object moving in simple harmonic motion has an amplitude of0.03m and a maximum acceleration of 55m/s^2. What is the frequency of the system
A particular engine has a power output of 4.00 kW and an efficiency of 23.0%. Assume the engine expels 7000 J of energy in each cycle. Find the energy absorbed in each cycle
For a damped simple harmonic oscillator, the block has a mass of 2.2 kg and the spring constant is 13 N/m. The damping force is given by -b(dx/dt), How many oscillations are made by the block in this time
A charge of +2 x 10^-7 C is 10 cm from a charge of -6 x 10^-6 C. Find the magnitude and direction of the force on each charge
Two runners start simultaneously from the same point on a circular 200-m track and run in the same direction. How far from the starting point will each have run at that instant
A police siren has a frequency of 550 Hz as the police car approaches you and a frequency of 450 Hz after it has passed you and receding, What is the true frequency of the police siren
A 2.05 cm tall object is placed 30.0 cm to the left of aconverging lens with a focal length f1 =18.9 cm. A diverging lens, with afocal length f2 = -41.5 cm, How tall is the final image of the object
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