A store sign of mass 3.25 kg is hung by two wires that each make an angle of =40.4 with the ceiling. What is the tension in each wire?
Hint: T=mg/2.sine *

Aroller coaster car moving at a velocity of 30 meters/second has a momentum of 2.5 x 10^4 kilogram meters/second. what is its mass?

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above

Since the energy was not raising the temperature of the water during these segments, what was the energy used to do instead? your answer must include an explanation of what is happening to the molecules.