The majority of the radiation emitted to the general public in ...

[P68T]

The majority of the radiation emitted to the general public in the normal operation of a nuclear plant comes from the ________.
 a. cooling water discharged to a lake or a river.
  b. reactor core directly.
  c. spent fuel rods stored on site.
  d. fission fragment gases vented to the atmosphere.
  e. low level wastes shipped from the plant

Question 2

Frank says that if you release the string when swinging a ball in a horizontal circle, the ball flies out in the radial direction defined by the string at the instant you release the ball. John says that it flies out along a tangent line perpendicular to the string, and that it then drops straight down to the ground. Which one, if either, is correct?
 a. Frank, because the centrifugal force is no longer counteracted by the string.
  b. Frank, because balls naturally fly straight out.
  c. John, because there is no centrifugal force. d. John, because balls fall straight down when released. e. Neither, because although there is no centrifugal force, and the ball's velocity is tangent to the circle at the instant of release, the ball then follows a parabolic trajectory.

[nital]

Answer to Question 1

d

Answer to Question 2

E

[P68T]

Excellent

[xiaomengxian]

Gracias!