1pt A ball with mass (m) is dropped from a certain height. Which equality could be rearranged to find the velocity of the
ball after it has fallen through a certain distance?
A. (1/2) mv2 = mgah
B. (1/2) mv2 = (1/2) kx2
c. 1/2mv2= kq1q2/r
D. mgAh = (1/2)kx2

Act has a 1200: 5 or 240: 1 turns ratio. it is short circuited. what is the maximum current at 1200a primary if we put a 100ohm resistor across the secondary end of the ct. use it as current source circuit.

*drag each tile to the correct location in the sequence* the table shows chronological events in the life of our sun, a medium-sized star. place the missing events into the correct rows of the table.

A1,700kg car is being used to give a 1,400kg car a push start by exerting a force of 140n the impulse on the smaller car during the 30.0s of contact is +670kg*m/s. what is the impulse of the smaller car on the larger car? -814 kg*m/s 0kg *m/s -670kg*m/s -550kg*m/s