What is the bending of a wave due to it entering a different medium as it travels?

diffraction

refraction

absorption

reflection

The potential energy of a 0.15 kg pendulum is 15 J at the tops of its swing, what is its kinetic energy at the bottom? a) 2.25 J b) 0 J c) 15 J d) 18.3 J

A volleyball serve was in the air for 2.2 seconds before it landed untouched in the far corner of the opponent's court. What was the maximum height of the serve?

What shape marks the pegasus constellation?

A 79-kg worker at the Burj Khalifa, the tallest building in the world with its roof 828 m above the ground below, rides a series of elevators from the ground level to the roof. What is the worker's change in gravitational potential energy?

An apple from the top branch of the tree and an apple from the bottom branch of a tree fall at the same time.

An iron rod is: A:a good conductor of heat and electricity, but not magnetic B: magnetic and a good conductor of heat, but is an insulator of electricity C: magnetic and a good conductor of heat and electricity D: not magnetic and an insulator of

Which stage are there homologous chromosomes lines up down the middle of the cell

Suppose you were bungee jumping from a bridge while blowing a hand-held air horn. How would someone remaining on the bridge hear the pitch of the air horn as time increased? a. The pitch would get progressively lower (i. e., smaller frequency) b.

Area where magma from deep within the mantle melts through the crust

To obtain a learner's license, you must be at least years old.