A 38-kilogram canoe broke free of its dock and is now floating downriver at a speed of 2.2 m/s? Show your work.

Why can certain stars sometimes be identified as eclipsing binary stars?

When the angle of incidence is above the critical angle, what law does light obey?

A 1790 kg car has just passed a diner. The closest the car came to the diner was R=28.5 m, but the car has driven another x=42.7 m in the 2.85 s2.85 s elapsed since then.

Which statement is true according to Newton's first law of motion? A. In the absence of an unbalanced force, an object at rest will stay at rest and an object in motion will come to a stop. B.

Two hockey players are traveling at velocities of v1 = 10 m/s and v2 = - 22 m/s when they undergo a head-on collision. after the collision, they grab each other and slide away together with a velocity of - 3.6 m/s.

The portion of a light ray that falls on a surface is a/an

Give the definition for diffusion. (A) gas molecules mix unequally average distance between collisions (B) gas molecules escape from a container into a vacuum through a small hole (C) gas molecules mix equally (D) gas molecules spread out in a

As resistance goes up, what happens to the current?

1. A 0.828-nm photon collides with a stationary electron. After the collision, the electron moves forward and the photon recoils backwards. a) Find the momentum of the electron. b) Find the kinetic energy of the electron.

When are you most aware of your motion in a moving vehicle: when it is moving steadily in a straight line or when it is accelerating?