Which of the following is a unit of power?
a. kilowatt-hour
b. newton
c. joules per second
d. foot-pound
e. none of these
c
You might also like to view...
Sphere A carries a net charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force between them?
A) There is no force between them since one is neutral. B) There is a force of repulsion between them. C) There is a force of attraction between them. D) The force is attractive if A is charged positively and repulsive if A is charged negatively. E) The force is repulsive if A is charged positively and attractive if A is charged negatively.
A single slit forms a diffraction pattern, with the first minimum at an angle of 40° from central maximum. Monochromatic light of 410 nm wavelength is used
The same slit, illuminated by a different monochromatic light source, produces a diffraction pattern with the second minimum at a 60° angle from the central maximum. The wavelength of this light, in nm, is closest to: A) 276 B) 293 C) 309 D) 326 E) 342
A uniform electric field, with a magnitude of 650 N/C, is directed parallel to the positive x-axis. If the potential at x = 3.0 m is 1 700 V, what is the potential at x = 1.0 m?
a. 3 300 V b. 4 050 V c. 3 000 V d. 400 V e. 1 500 V
According to special relativity
1) space and time are aspects of each other. 2) mass and energy are aspects of each other, 3) both of the above, 4) neither of the above, and the underlying postulate of special relativity is 5) F = ma. 6) E = mc2. 7) that the speed of light has a constant value for all observers.