What is the magnitude of the horizontal displacement of the rock?
a. 3.53 m
b. 13.3 m
c. 222 m
d. 26.1 m
d
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Conservation of charge means that
a. The total amount of charge in the universe is constant. b. No experimenter has ever seen a single charge destroyed by itself. c. Electrons by themselves can be neither created nor destroyed. d. Charge can be neither created nor destroyed. e. All of the above.
Compared to the mass of a proton, the mass of an electron is
A) very much less. B) identical. C) greater.
The straight-line distance and direction between two points are, together, called
a. velocity. b. displacement. c. distance. d. acceleration.
A 22.0-kg mirror with a surface area of 1.0 m2 and a 98% reflectivity is bombarded by light of average intensity 770.0 W/m2 at an angle of 30.0? to the normal of its surface
If the light has a duration of how much does the velocity of the mirror change during that time? (c = 3.00 × 108 m/s, ?0 = 4? × 10-7 T ? m/A, ?0 = 8.85 × 10-12 C2/N ? m2) A) 120 nm/s B) 4.2 nm/s C) 3.6 nm/s D) 2.1 nm/s