The gravitational force between two very large metal spheres in outer space is 200 N. How large would this force be if the mass of each sphere were cut in half?
A. 12.5 N
B. 50 N
C. 100 N
D. 200 N
Answer: B. 50 N
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An object has been located orbiting the Sun at a distance from the Sun of 65 AU. What is the approximate orbital period of this object?
a. 65 years b. 275,000 years c. 4225 years d. 8.1 years e. 524 years
The work done by the centripetal force on an object with a mass of 1 kg moving with a constant velocity of 4 m/s into a circular path of radius 0.6 m for one full cycle is
A) 100.7 J B) 3.8 J C) 0 J D) 40 J E) 80 J
State Kirchhoff's loop rule
What will be an ideal response?
The laws of refraction and reflection are the same for sound as for light. The speed of sound in air is 340 m/s and in water it is 1510 m/s. If a sound wave approaches a plane water surface at an angle of incidence of 12.0°, what is the angle of refraction?