Control rods in a nuclear reactor are used to:
A. move fuel rods around in the chamber.
B. absorb neutrons.
C. provide cooling by decreasing the temperature of the water.
D. increase the temperature of the water.
E. provide neutrons to initiate reactions.

Alarge box of mass m is pulled across a horizontal frictionless surface by a horizontal rope with tension t. a small box of mass m sits on top of the large box. the coefficients of static and

Examples of states of consciousness include a. daydreaming b. dreaming during sleep c. hypnosis d. all of the above

Which statement is true? a) the work done to lift an object 6 meters is greater than the gravitational potential energy it gains. b) the work required to push an object is less than the work required to pull an object the same distance. c) the work required to raise an object to a height is equal to the gravitational potential energy the object gains. d) the work done against gravity to lift an object straight up is greater than the work required to roll it up a ramp.