Achild pulls a 15 kg sled containing a 5 kg dog along a straight
force of 55 n on the sled at an angle of 20° above
coefficient of friction between the sled and the ground is 0.22
ed at an angle of 20° above the horizontal, as shown in the figure above. the
(b) what is the magnitude and direction of the net force on the sled-dog system ?

When using two-wire cable to feed a 240-v appliance that does not require a neutral wire, you should a. mark both ends of the white wire green. b. use the cable as is. c. use only the black wire. d. mark both ends and any exposed area of the white wire black.

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?

The electric potential v is constant everywhere within a certain region of space. which statement below is true? the choices are: the electric field is also constant (but not zero) within the region. a charged particle placed within the region will experience an electric force. the electric field is zero everywhere within the region. the electric field varies from place to place within the region.