In refraction, when a wave travels from one medium to another, it

A. changes speeds.

B. stays in step.

C. always moves in the same direction.

D. travels in the opposite direction.

When the speed of an object changes, what happens to its velocity?

The speed of an object in a set direction is called its what?

What emotional state is important to maintain while reporting an accident in the lab

Eratosthenes determined the circumference of Earth by conducting an experiment. Put his steps in order as they correlate to the scientific method. 1. State the Problem: 2. Make a Hypothesis: 3.

What are some inherited traits and learned behaviors of polar bears?

A mechanic pushes a 3.00 ✕ 103-kg car from rest to a speed of v, doing 4,680 j of work in the process. during this time, the car moves 26.0 m. neglecting friction between car and road, find v and the horizontal force exerted on the car.

Explain how latitude determines wind patterns

What is the difference between contact forces and forces that act through a force field?

Suppose two parallel-plate capacitors have the same charge Q. but the area of capacitor 1 is A and the area of capacitor 2 is 2A. 1.

You want to launch a stone using the elastic band of a slingshot. The force that the elastic band applies to an object is given by F = - α∆s4, where α = 45 N m4 and ∆s is the displacement of the elastic band from its equilibrium position.