An electric fan is turned off and its angular velocity decreases uniformly from 500rev/min to 200rev/min in 4.00s. a) Find the angular acceleration in rev/s2 and the number of revolutions made by the motor in 4.00s interval. b) How many more seconds are required for the fan to come to rest if the angular acceleration remain constant at the value calculated in part (a)

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

How does the entropy of steam compare to the entropy of ice?

Daughter element the new element produced along with a decay particle in a nuclear transmutation 2. half-life the substance that decays in a nuclear transmutation 3. parent element the change of one chemical element into another by nuclear decay or radioactive bombardment 4. transmutation the time required for the decay of one-half of the atoms in a sample of radioactive material