Which of the following statements is true? a. x-rays have higher frequencies than microwaves. b. uv rays have higher frequencies than gamma rays. c. gamma rays have lower frequencies than microwaves. d. infrared rays have lower frequencies than radio waves.

Aboxcar traveling at 12 m/s approaches a string of 5 identical boxcars sitting stationary on the track. the moving boxcar collides and links with the stationary cars and they all move off together along the track. what is the final speed of the cars immediately after the collision? (you may take the mass of each boxcar to be 18,537 kg.)

The electric field inside a cell membrane is 8.0mn/c. what's the force on a singly charged ion in this field?

Bonds within one water molecule are examples of