The kinetic energy of a pendulum is least
a. when its potential energy is least.
b. at the top of its swing.
c. at the bottom of its swing.
d. when its total energy is greatest.
b
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A light source radiates 60.0 W of single-wavelength sinusoidal light uniformly in all directions. What is the average intensity of the light from this bulb at a distance of 0.400 m from the bulb?
A) 14.9 W/m2 B) 37.2 W/m2 C) 27.4 W/m2 D) 11.9 W/m2 E) 29.8 W/m2
A 1.0-C point charge is 15 m from a second point charge, and the electric force on one of them due to the other is 1.0 N. What is the magnitude of the second charge? (k = 1/4??0 = 8.99 × 109 N ? m2/C2)
A) 25 C B) 1.0 C C) 10 nC D) 0.025 C E) 25 nC
Consider the list of physical properties below. According to special relativity, which ones are dependent on the observer speed?
A. Time B. Energy C. Length D. All of these choices are correct
The majority of planets are estimated to be gas giants
Indicate whether the statement is true or false