Kinetic Energy: Which one has larger kinetic energy: a 500-kg object moving at 40 m/s or a 1000-kg object moving at 20 m/s?
A. The 500-kg object
B. The 1000-kg object
C. Both have the same kinetic energy.
Answer: A
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The Schwarzschild radius of a black hole depends on ________
A) the way in which the black hole formed B) both the mass and chemical composition of the black hole C) only the mass of the black hole D) the observationally measured radius of the black hole
When an object is inside the focal point of a concave mirror, a(n) ______________ image always results
Fill in the blank(s) with correct word
You would like to buy a full-length mirror which allows you to see yourself from head to toe. The minimum height of the mirror is
A. half your height. B. two-thirds of your height. C. equal to your height.