Afisherman of mass m = 74.7~\mathrm{kg}m=74.7 kg is sitting in a canoe with mass m = 164~\mathrm{kg}m=164 kg on a warm summer day. the canoe has length l=7.72~\mathrm{m}l=7.72 m and he is sitting at the very end of the canoe. after several hours of not catching anything, he decides to try his luck from the other end of the boat, so he gets up and walks over to the other end of the canoe, then sits down again. assuming that the water applies no frictional force on the canoe, what is the (magnitude of the) distance the canoe itself has traveled in this process?

1.in one challenge on the titan games, competitors have to lift 200 pounds up a long ramp. angel is able to move the weight in 42 seconds. anthony gets it done in only 38 seconds. which statement is true? angel has more power than anthony. angel does more work than anthony. anthony does more work than angel. anthony has more power than angel. 2.a mountain climber exerts 41,000 j of work to climb a cliff. how much power does the climber need if she wants to finish in only 500 seconds? power = work / time 20,500,000 watts 82 watts 0.0122 watts 41,500 watts 3.your family is moving to a new apartment. while lifting a box 83 joules of work is done to put the box on a truck, you exert an upward force of 75 n for 3 s. how much power is required to do this? (hint: you only need two of the 3 numbers given! ) power = work / time 249 watts 25 watts 2075 watts 27.7 watts

Wavelength,frequency,and energy are related.what happens to a wave as it’s wavelength gets shorter?

What are similarities and differences of reflection, refraction, diffraction and absorption?