A thin rod is pivoted around its end, and an identical rod around its center. If they are to have the same rotational kinetic energy, then 
A. 2
B. 1
C. 1/2
D. 1/4
E. 4
C. 1/2
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The dielectric strength of rutile is 6.0 × 10^6 V/m, which corresponds to the maximum electric field that the dielectric can sustain before breakdown. What is the maximum charge that a 10-10-F capacitor with a 0.50-mm thickness of Rutile can hold?
a. 0.30 mC c. 0.60 µC b. 6.0 C d. 1.7 nC
The speed of sound in air at 0
is 331 m/s. What is the velocity of sound in air at a temperature of 30
?
A. 336 m/s B. 338 m/s C. 340 m/s D. 342 m/s E. 349 m/s
The diagram below shows the position of a long straight wire perpendicular to the page and a set of directions labeled A through H. When the current in the wire is directed up out of the page, the direction of the magnetic field at point P is
A. E. B. F. C. G. D. H. E. A.
Suppose Spider-Man throws a web that is 1.00 m long with a velocity of 0.8c (? = 5/3) with respect to the Earth. What will be the length of web as observed by J. Jonah Jameson standing on the Earth?
A. 0.80 m B. 1.67 m C. 1.33 m D. 0.60 m E. 1.00 m