An 8.79 kg block slides with initial speed of 1.78 m/s down a ramp inclined at an angle of 26. 4° with the horizontal. The coefficient of the kinetic friction between the block and the ramp is 0.69. Use energy conservation to find the distance the block slides down the ramp before coming to rest.

The experiments with static charges were done by:

Given the position vector of the particle r(t)=(t+1)i+(t^2−1)j+2t k, find the particle's velocity and acceleration vectors at t=1

Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?