Three positive charges are arranged as shown in the diagram. what is the magnitude and direction of the net electrical force acting on the +3 µc charge? magnitude: 1.75 n direction: 6.2° north of east magnitude: 1.75 n direction: 6.2° south of east magnitude: 1.86 n direction: 21° north of east magnitude: 1.86 n direction: 21° south of east

Many machines- including inclined planes such as ramps- increase the strength of the force put into the machine but decrease the distance over which the force is applied. true or false

Astone is dropped with no initial velocity from the top of a cliff and hits the ground a time of 3.9 s later. what is the height of the cliff, in units of meters? you may assume that air resistance is negligible. give the answer as a positive number question 15 a figure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 200 o 20.9 12000 o 3.33

In an experiment, how can i change human errors? be specific.