(newton's law of motion) a person stands on a scale in an elevator. when the elevator is at rest, the scale reads 700 n. when the elevator starts to move, the scale reads 600n. (a) is the elevator going up or down? show your solution to support your answer. (b) what is its acceleration?

Suppose you plot the distance traveled by an object at various times and you discover that the graph is not a straight line. what does this indicate about the object's acceleration?

A1.5m wire carries a 2 a current when a potential difference of 52 v is applied. what is the resistance of the wire?

Farmer a has a deep well and needs a lot of water for her animals and crops. her neighbor, farmer b, has a shallower well. he needs less water than farmer a because his farm is smaller. in years of drought, sometimes farmer b can't get any water from his wells. what can farmer b do to decrease the likelihood of his well running dry?