Susan is having a debate with her brother about wave movement. She believes that waves will always travel the same speed if they have the same energy, no matter what the medium it is travelling through. Her brother says that this is not correct, and that different mediums lead to different wave speeds. Who is right, and why?

Aperson standing in a canoe exerts a force of 700 n to throw an anchor over the side. find the acceleration of the canoe if the total mass of the canoe and the person is 100 kg?

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

The space between two 15-in.-long concentric cylinders is filled with glycerin (viscosity = 8.5 × 10-3 lb·s/ft2). the inner cylinder has a radius of 1 in. and the gap width between cylinders is 0.1 in. determine (a) the torque and (b) the power required to rotate the inner cylinder at 180 rev/min. the outer cylinder is fixed. assume the velocity distribution in the gap to be linear.