A planet is orbiting a star. Which of the following statements is true for the acceleration and gravitational forces in this situation?
A) The acceleration of the planet is much more than the acceleration of the star, and the gravitational force on the planet is much more than the gravitational force on the star.
B) The acceleration of the planet is much more than the acceleration of the star, but the gravitational force on the star is the same but opposite the gravitational force on the planet.
C) The gravitational force on the star is much smaller than the gravitational force on the planet, but the accelerations are equal and opposite.
B) The acceleration of the planet is much more than the acceleration of the star, but the gravitational force on the star is the same but opposite the gravitational force on the planet.
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Consider two flywheels of the same size and shape, but one with twice the mass. Rotational inertia of the more massive one is
A) two times greater. B) four times greater. C) the same as the other one. D) half.
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What will be an ideal response?
The distance traveled by a wave during a single period is
A) one-half wavelength. B) one wavelength. C) two wavelengths. D) none of the above
A shot-putter moves his arm and the 6.00-kg shot through a distance of 1.25 m, giving the shot a velocity of 8.20 m/s from rest. Find the average force exerted on the shot during this time
a. 323 N b. 161 N c. 118 N d. 12.7 N e. 252 N