Nix and Hydra are moons of ______________
a. Earth
b. Venus
c. Neptune
d. Mars
e. Pluto
e
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A nonconducting sphere contains positive charge distributed uniformly throughout its volume. Which statements about the potential due to this sphere are true? All potentials are measured relative to infinity
(There may be more than one correct choice.) A) The potential is highest at the center of the sphere. B) The potential at the center of the sphere is zero. C) The potential at the center of the sphere is the same as the potential at the surface. D) The potential at the surface is higher than the potential at the center. E) The potential at the center is the same as the potential at infinity.
How much work must be done to accelerate a particle of mass 2.1 × 10-14 kg from a speed of 1.5 × 108 m/s to a speed of 2.5 × 108 m/s? (c = 3.00 × 108 m/s)
What will be an ideal response?
A farsighted person cannot see clearly closer than 2.0 m. What power contact lenses would correct this near point to 25 cm?
A. 2.0 D B. 0.5 D C. -0.5 D D. 3.5 D E. -3.5 D
According to the special theory of relativity, if a 30-year old astronaut sent on a space mission is accelerated to speeds close to that of light, and then returns to Earth after 20 years as measured on Earth, what would be his biological age upon returning?
a. less than 50 years b. 50 years c. more than 50 years d. exactly 100 years