A 20-kg Block is pulled along a rough horizontal surface (coefficient of friction μ = 0.1) by a force F = 100 N that acts at an angle θ = 37 degrees with the horizontal. a) Draw and label all forces on the block.
b) Calculate the vertical force exerted by the surface on the block. (The Normal Force)
c) Calculate the net horizontal force on the block.
d) Calculate the acceleration of the block.

An electric current in a wire will push or pull on a permanent magnet. which statement best explains how an electric current creates an electromagnetic force on another magnet?

Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane

First, launch the video below. you will be asked to use your knowledge of physics to predict the outcome of an experiment. then, close the video window and answer the question at right. you can watch the video again at any point. part a as in the video, we apply a charge +q to the half-shell that carries the electroscope. this time, we also apply a charge –q to the other half-shell. when we bring the two halves together, we observe that the electroscope discharges, just as in the video. what does the electroscope needle do when you separate the two half-shells again? view available hint(s) as in the video, we apply a charge + to the half-shell that carries the electroscope. this time, we also apply a charge – to the other half-shell. when we bring the two halves together, we observe that the electroscope discharges, just as in the video. what does the electroscope needle do when you separate the two half-shells again? it deflects more than it did at the end of the video. it deflects the same amount as at end of the video. it does not deflect at all. it deflects less than it did at the end of the video. submit