Which of these is NOT a vector quantity?
a. momentum
b. impulse
c. displacement
d. speed
e. velocity
d
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Which is larger, a newton or a pound?
a. a newton b. a pound c. This question is nonsense—they don't measure the same physical quantity. d. They are the same size.
In general, as stars go through the last stage of post-main sequence evolution, they will lose mass in the process of settling down into their final state. Explain the mass-loss process and the final state of the star for a low mass star
What will be an ideal response?
To what radius would the sun have to be compressed in order for it to become a black hole? The mass of the sun is 1.99 × 1030 kg, G = 6.67 × 10-11 N ? m2/kg2, and c = 3.00 × 108 m/s
A) 2950 m B) 1470 m C) 6.96 × 108 m D) 2.66 × 106 m E) 3.72 × 104 m
If the diameter of a radar dish is doubled, what happens to its resolving power assuming that all other factors remain unchanged? Its resolving power
A) quadruples. B) doubles. C) halves. D) is reduced to one-quarter its original value. E) is reduced to one-half its original value.