A square loop of wire has a current going around it. The magnetic ...

[leo leo]

A square loop of wire has a current going around it. The magnetic field from the current on each side of the loop results in a magnetic force on the wire on the opposite side. Each resulting magnetic force on the opposite side wire
 a. pushes inward on the loop.
  b. is actually zero since a current cannot push on itself.
  c. depends on whether the current is clockwise of counterclockwise.
  d. pushes outward on the loop.

Question 2

A mass on a spring vibrates in simple harmonic motion at a frequency of 4.0 Hz and an amplitude of 5.0 cm. If a timer is started when its displacement is a maximum (hence x = 5 cm when t = 0), what is the acceleration magnitude when t = 3 s?
 a. 31.6 m/s2
  c. 10.5 m/s2
  b. 15.8 m/s2
  d. zero

[polinasid]

Answer to Question 1

D

Answer to Question 2

A

[leo leo]

Excellent

[diana chang]

TYSM