A block mass m = 34 kg and a speed of v is behind a block mass M = 81 kg and a speed of .5m/s, as shown. The surface is frictionless and the blocks collide and a couple. After the collision, the blocks have a common speed of .9 m/s. What is the magnitude of the impulse on 34 kg block due to collisions? A. 32Ns
B. 14Ns
C. 41Ns
D. 52Ns
E. 73Ns

Using a wheel and axle, a farmer is trying to lift a bucket of water from the bottom of a well. the larger wheel has a radius of 40 cm compared to the axle that has a radius of 10 cm. if a bucket of water is 50 n, then how much effort is required to raise it? 12.5 n 200 n 2 n 500 n

What is the increase in density of a medium due to wave travel?

Ineed this now one scientist feels that the changes in global climatic patterns may be good for the health of the biosphere. another scientist feels that sharp changes in climatic patterns could result in the extinction of the biosphere. which of these is the most likely reason the two scientists gave conflicting opinions on the impact of changes in the global climatic pattern? they do not have enough knowledge on the topic. they did not discuss the issue among themselves. they believe conflicting opinion strengthens science. they study different areas of science and have different scientific focuses.