Compared to other fundamental forces, the Universal Gravitational Constant G indicates gravity to be a relatively
A) weak force.
B) strong force.
C) extremely strong force.
Answer: A
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As atmospheric pressure increases, what happens to the velocity of sound? (Assume that all other factors remain constant.)
A) It increases. B) It decreases. C) It does not change. D) It increases on warm days and decreases on cold days.
Assuming the frequency remains constant, a monochromatic light ray is transmitted through an glass-to-air boundary, what happens to the wavelength?
a. decreases b. approaches zero value c. increases d. remains unchanged
Atoms with the same atomic number but with different numbers of neutrons are referred to as
A) positrons. B) nucleons. C) nuclides. D) isotopes. E) none of the given answers
A car is moving along a straight highway and accelerates at a constant rate while going from point A to point B. If the acceleration is positive, increasing the speed of the car, where does the position where the instantaneous speed equals the average speed occur for the interval from A to B?
a. midway between A and B c. closer to B than to A b. closer to A than to B d. Any of the answers could be correct depending on the original speed.