Atransformer has a primary coil with 600 turns and a secondary coil
with 300 turns. if the output voltage is 320 volts, what is the input
voltage?
a. 8 volts
b. 150 volts
c. 640 volts
d. 600 volts

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?

Gas cloud 1 is likely to form a star. gas cloud 2 is not. based on this information, match the given conditions with each cloud

Suppose that 27 j of work is needed to stretch a spring from its natural length of 6 m to a length of 9 m. (a) how much work is needed to stretch the spring from 12 m to 14 m? j (b) how far beyond its natural length will a force of 78 n keep the spring stretched?