the greater average kinetic energy per molecule,
A. The quantity is greater for gas A.
B. The quantity is greater for gas B.
C. The quantity is the same for both gases.
D. One does not know enough to compare the quantities.
C. The quantity is the same for both gases.
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A 5.0-nC point charge is embedded at the center of a nonconducting sphere (radius = 2.0 cm) which has a charge of ?8.0 nC distributed uniformly throughout its volume. What is the magnitude of the electric field at a point that is 1.0 cm from the center of the sphere?
a. 1.8 × 10^5 N/C b. 9.0 × 10^4 N/C c. 3.6 × 10^5 N/C d. 2.7 × 10^5 N/C e. 7.2 × 10^5 N/C
Aberration: Which of the following statements are correct? (There could be more than one correct choice.)
A. Spherical aberration, but not chromatic aberration, occurs for lenses. B. Chromatic aberration, but not spherical aberration, occurs for lenses. C. Both chromatic aberration and spherical aberration occur for lenses. D. Both chromatic aberration and spherical aberration occur for spherical mirrors.
How much power does a sphere with a radius of 10 cm radiate if is has an emissivity e = 1.0 and is kept at a temperature of 400 K? The Stefan-Boltzmann constant is 5.67 x 10-8 W/(m2•K4)
A) 60 W B) 70 W C) 180 W D) 210 W E) 360 W
The position of a particle moving along the x axis is given by x = 6.0t2 ? 1.0t3, where x is in meters and t in seconds. What is the position of the particle when it achieves its maximum speed in the positive x direction?
a. 24 m b. 12 m c. 32 m d. 16 m e. 2.0 m