A river flows due east at 2.20 m/s. A boat crosses the river froro the south shore to the north shore at a speed of 13.0 m/s due north relative to the water. What is the velocity of the boat as viewed by an observer on the shore?

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

Arowboat passenger uses an oar to push the boat off the dock by exerting a force of 40n for 3.0s. what impulse acts on the boat.

What is the coefficient of kinetic friction μk between the block and the tabletop?