How is a larger star like an SUV, while a smaller star like a fuel efficient hybrid vehicle?
A) The larger the star, the faster it burns fuel.
B) The larger the star, the more likely it is to explode.
C) The larger the star, the shorter its life span.
D) Larger stars have only one source of energy.
Answer: A
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An initially installed flywheel can store 106 J of kinetic energy when rotating at 300 rad/s. It is replaced by another flywheel of the same size but made of a stronger material. If its mass is the same as that of the original, and it is now capable of achieving a rotational speed of 425 rad/s, what maximum energy can be stored?
a. 2.01E+6 J b. 1.66E+3 J c. 1.73E+5 J d. 1.00E+6 J
Which of the following sound frequencies lie(s) in the audible range?
a. 13 Hz b. 5 kHz c. 1 MHz d. All of these
The largest of the red stars are the ____________________ stars
Fill in the blank(s) with correct word
Light bends when it
A) passes a massive star. B) passes through a gravitational field. C) both of these D) neither of these