If two vectors are perpendicular to each other, their cross ...

[asan beg]

If two vectors are perpendicular to each other, their cross product must be zero.
 
  A) True B) False

Question 2

A spinning ice skater is able to control the rate at which she rotates by pulling in her arms. We can best understand this effect by observing that in this process:
 
  A) her angular momentum remains constant.
  B) her moment of inertia remains constant.
  C) her kinetic energy remains constant.
  D) her total velocity remains constant.
  E) she is subject to a constant non-zero torque.

[gasdhashg]

Answer to Question 1

B

Answer to Question 2

A