Its more difficult to start moving a heavy carton from rest than ...

[Tirant22]

Its more difficult to start moving a heavy carton from rest than it is to keep pushing it with constant velocity, because
 
  A) The normal force is greater when the carton is at rest.
  B) s < k.
  C) Initially, the normal force is not perpendicular to the applied force.
  D) k < s.
  E) s = k.

Question 2

A straight wire 20 cm long, carrying a current of 4 A, is in a uniform magnetic field of 0.6 T. What is the force on the wire when it is at an angle of 30 with respect to the field?
 
  A) 0.2 N
  B) 0.3 N
  C) 0.4 N
  D) 0.5 N
  E) 0.6 N

[aruss1303]

Answer to Question 1

D

Answer to Question 2

A

[Tirant22]

TYSM

[frankwu0507]

Gracias!