You lift a book slowly from the floor to the table. You then lift an identical book rapidly from the floor to the table. Compared with the slow process, in the faster process your
A) work done is greater.
B) energy output i.e., amount of energy transformed into gravitational energy is greater.
C) Both of the above are correct.
D) power output is greater.
E) All of the above are correct.
Question 2
Which of the following observations lend support to the big bang theory?
A) the cosmic background radiation
B) the ripples, or variations, in the cosmic background radiation
C) Both of the above.
D) the red shift of the light from distant galaxies
E) All of the above.
