Starting from rest, a 2 kg body acquires a speed of 8 m/s in 2 seconds. The net force acting on the body is __________
Fill in the blank(s) with correct word
8 N
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In the process of nuclear fusion,
A) two or more nuclei fuse or stick together to form a heavier nucleus that has exactly the same mass as the original nucleus B) a heavy nucleus breaks apart into a number of smaller nuclei whose combined mass is less than the original nucleus C) two or more nuclei fuse or stick together to form a heavier nucleus whose combined mass is slightly less than the original nucleus D) two or more nuclei fuse or stick together to form a heavier nucleus whose combined mass is slightly greater than the original nucleus
Consider a conducting bar that is free to slide along conducting rails in an upward magnetic field as shown in the diagram below. We push the bar so that it moves to the right at a constant speed. Which way will current flow through the bar, the rails, and the light bulb?
A. Clockwise
B. Counter-clockwise
C. No current flows at all.
A nanometer is
a. one thousandth of a meter. b. one millionth of a meter. c. one billionth of a meter. d. one trillionth of a meter. e. none of the above.
One end of a copper rod is in thermal contact with a hot reservoir at T = 500 K and the other end is in thermal contact with a cooler reservoir at T = 300 K. Find the entropy change of each reservoir, and the total entropy change, when 8000 J of heat energy are conducted from one end of the rod to the other with no change in the temperature distribution in the rod.
What will be an ideal response?