A76-kg ball is tied to one end of a massless string of length 1.3 m. the other end of the string is tied to a nail in the center of a table. the ball is set into uniform circular motion around the nail, and the tension in the string is 51 n. how long does the ball take to make one complete revolution? assume friction with the table is negligible.

Which graph best represents the relationship between the electric current and the rate at which a magnet is turning inside an electric generator?

Science and technology are interdependent. advances in one lead to advances in the other. give an example of this phenomenon.

Air initially at 0.75 bar, 1000 k, and occupying a volume of 0.12 m^3 undergoes two processes. process 1-2: the air is compressed isothermally until the volume is halved. process 2-3: the air undergoes a constant pressure process until the volume is halved again. assume ideal gas behavior. a) determine the mass of the air, in kg. b) the work and the heat transfer for each of the two processes, in kj. (100 kj = 1 bar . m^3)