A grindstone spinning at the rate of 12 rev/s has what approximate angular speed?
a. 3.2 rad/s
c. 52 rad/s
b. 26 rad/s
d. 75 rad/s
D
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Explain how the structure of the atom creates binding energy, and what limits there are on the amount of binding energy an electron can have
What will be an ideal response?
Which of the following diagrams shows the greatest magnitude net torque with a zero net force? All the rods, of length 2r, rotate about an axis that is perpendicular to the rod and fixed in the center of the rod. All the forces are of magnitude F or 2F and all distances from the axis are r or r/2.
A.
B.
C.
D.
E.
What is the most accurate physical analog for a particle in a box?
A temperature difference of 5 K is equal to
a. a difference of 9 on the Celsius scale. b. a difference of 9 on the Fahrenheit scale. c. a difference of 2.8 on the Rankine scale. d. a difference of .5 on the Fahrenheit scale. e. a difference of 2.8 on the Celsius scale.