This sequence of paintings shows how a large gas cloud can collapse to become a much smaller, spinning disk of gas. What law explains why cloud spins faster as it shrinks in size?
A) the law of conservation of energy
B) the universal law of gravitation
C) the law of conservation of angular momentum
D) Kepler's third law
E) Newton's second law of motion
C) the law of conservation of angular momentum
You might also like to view...
If the temperature of a sample of water at 0°C is slightly increased, its volume
A) increases. B) decreases. C) remains the same.
When white light disperses as it passes through a prism, which of the following colors moves at the lowest speed in the prism?
a. blue b. green c. yellow d. red
A Doppler red shift indicates
a. a shift toward higher frequencies. b. a shift toward shorter wavelengths. c. that a light source is receding relative to the observer. d. none of these.
A 1.6-kg ball is attached to the end of a 0.40-m string to form a pendulum. This pendulum is released from rest with the string horizontal. At the lowest point of its swing, when it is moving horizontally, the ball collides with a 0.80-kg block initially at rest on a horizontal frictionless surface. The speed of the block just after the collision is 3.0 m/s. What is the speed of the ball just
after the collision? a. 1.7 m/s b. 1.1 m/s c. 1.5 m/s d. 1.3 m/s e. 2.1 m/s