You separate two magnets that are initially held together by magnetic forces. How does this affect the mass and energy of the system of magnets?
A) It creates additional mass, located within each magnet, but no additional energy.
B) It creates additional mass, located within each magnet, and also additional energy.
C) It creates neither additional energy nor additional mass.
D) It creates additional mass, located in the space between the two magnets, and also additional energy.
E) It creates additional energy, located in the space between the two magnets, but not additional mass.
D
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Newton's Second Law of Motion tells us that the net force applied to an object equals its ________
A) mass times velocity B) mass times acceleration C) mass times energy D) momentum times velocity
Compared to clocks in a stationary reference frame, clocks in a moving reference frame run
A) slower. B) faster. C) at the same rate.
Compare the rotation of the stars and the spiral density wave pattern in our Galaxy. How is it observed?
What will be an ideal response?
Where is our solar system located within the Milky Way Galaxy?
A) very near the center of the galaxy B) at the far edge of the galaxy's visible disk C) roughly halfway between the center and the edge of the visible disk of the galaxy D) in the halo of the galaxy