Decide whether the following statement applies to electric fields, magnetic fields, both kinds of fields, or neither field:
Field lines always form closed loops.
A. Neither electric nor magnetic fields
O B. Magnetic fields only
C. Both electric and magnetic fields
O D. Electric fields only

Abatter hits the baseball a with an initial velocity of v0 = 110 ft/sec directly toward fielder b at an angle of 23° to the horizontal; the initial position of the ball is 2.2 ft above ground level. fielder b requires 0.44 sec to judge where the ball should be caught and begins moving to that position with constant speed. because of great experience, fielder b chooses his running speed so that he arrives at the “catch position” simultaneously with the baseball. the catch position is the field location at which the ball altitude is 8.4 ft. determine the velocity of the ball relative to the fielder at the instant the catch is made.

Which units can be used to measure length or distance? check all that apply. gram meter kilometer liter inch

The two required components for a generator are