Suppose the Sun were suddenly to shrink in size but that its mass remained the same. According to the law of conservation of angular momentum, what would happen?
A) The Sun would rotate faster than it does now.
B) The Sun's rate of rotation would slow.
C) The Sun's angular size in our sky would stay the same.
D) This could never happen, because it is impossible for an object to shrink in size without an outside torque.
A
You might also like to view...
Ming measures a recession velocity of 2000 km/sec for a galaxy. About how far away is that galaxy if the Hubble constant is 20 km/sec/million light years? (Hint: be sure to check the units in your calculation.)
A) 100 million light years B) 100 light years C) 40 thousand light years D) 40 billion light years
A miniature, spring-loaded, radio-controlled gun is mounted on an air puck. The gun's bullet has a mass of 6.00 g, and the gun and puck have a combined mass of 130 g. With the system initially at rest, the radio-controlled trigger releases the bullet, causing the puck and empty gun to move with a speed of 0.500 m/s. Of the total kinetic energy of the gun-puck-bullet system, what percentage is in
the bullet? a. 4% b. 98% c. 96% d. 23% e. 100%
What observational evidence do we have that eruptions in the centers of galaxies involve magnetic fields?
What will be an ideal response?
Wien's Law: If the sunlight from a star peaks at a wavelength of 0.55 µm, what temperature does this imply for the surface of that star? The constant in Wien's law is 0.00290 m ? K.
A. 9500 K B. 5300 K C. 2500 K D. 25,000 K E. 15,000 K