Static charge can build up quickly on an object ________. a. ...

[NguyenJ]

Static charge can build up quickly on an object ________.
 a. during days when the conditions are not humid
  b. when the object is in good electrical contact with the ground
  c. only when it is in contact with a good conductor
  d. only when the object is moving

Question 2

A 4.0-kg block is pushed up a 36 incline by a force of magnitude P applied parallel to the incline. When P is 31 N, it is observed that the block moves up the incline with a constant speed. What value of P would be required to lower the block down the incline at a constant speed?
 a. 27 N
  b. 15 N
  c. 13 N
  d. 17 N
  e. 19 N

[alvinum]

Answer to Question 1

a

Answer to Question 2

B

[NguyenJ]

TYSM

[nguyenhoanhat]

Gracias!