A car moving at a constant speed goes around a curve of 400 ft ...

[savannahhooper]

A car moving at a constant speed goes around a curve of 400 ft radius and then goes around a second curve of 200 ft radius. The centripetal force acting on the car as it goes around the 200 ft radius curve is ___________ the value of the centripetal force acting on the car as it goes around the 400 ft radius curve.
 a. one quarter
  b. one half
  c. the same as
  d. twice
  e. four times

Question 2

What is stimulated emission?
 a. The interaction of a photon with an excited atom to cause it to emit another photon of the same wavelength.
  b. Emission in response to an electric discharge through a gas instead of just random light emission.
  c. Any excitation of atoms that later results in photons being given off by a substance.
  d. Stimulation of the random action of electrons and photons creating scattered emission of light.
  e. Emission of photons without requiring electron shell jumps.

[mmj22343]

Answer to Question 1

D

Answer to Question 2

a

[savannahhooper]

Thank you!

[mmj22343]

Always glad to help...