A space station out beyond the solar system is rotating with constant angular velocity. A spaceship heading into the station along a diameter of the station, uses its rockets to brake, and then docks inside the station at its center. When the spaceship docks, the angular momentum of the system consisting of the station and ship
a. is less than the original angular momentum of the station.
b. is the same as the original angular momentum of the station.
c. is greater than the original angular momentum of the station.
d. is less than the original angular momentum of the station, but the angular velocity increases.
e. is greater than the original angular momentum of the station, but the angular velocity decreases.
B
You might also like to view...
The total mass of a galaxy tends to be only slightly larger than the visible mass
Indicate whether the statement is true or false
Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m.You drop the box. As it falls to its original level, its kinetic energy is __________
Fill in the blank(s) with correct word
The horizontal cross section of an industrial chimney is shown in the accompanying sketch. Flue gases maintain the interior surface of the chimney at 300°C and the outside is exposed to ambient temperature of 0°C through a heat transfer coefficient of 5 W/(m2 K). The thermal conductivity of the chimney is k = 0.5 W/(mK). For a grid spacing of 0.2 m, determine the temperature distribution in the chimney and the rate of heat loss from the flue gases per unit length of the chimney.
GIVEN
Chimney with hot flue gases inside, ambient temperature outside
FIND
(a) Temperature distribution in the chimney
(b) Rate of heat loss from the flue gases per unit length
ASSUMPTIONS
Steady state conditions
Neglect radiation heat transfer
SKETCH
Simple Harmonic Motion: In simple harmonic motion, when is the magnitude of the acceleration the greatest? (There could be more than one correct choice.)
A. when the speed is a maximum B. when the displacement is a zero C. when the magnitude of the displacement is a maximum D. when the potential energy is a maximum E. when the kinetic energy is a minimum