Compared to the volume of its nucleus, the volume of an atom is about
A) the same.
B) a thousand times greater.
C) a million times greater.
D) a billion times greater.
E) a trillion times greater.
E
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If a string of length L, fixed at both ends, is made to resonate at its lowest possible frequency, what is the wavelength associated with that resonance?
A. L B. 2L C. L/2 D. 0.707L E. 1.414L
Which of the following statements applies in the final moments of the life of high-mass stars?
A. Around their cores, they have a series of nested shells, each made of a heavier element than the one surrounding it. B. The core temperature is about 2 billion degrees. C. Their outer layer is mainly hydrogen and helium. D. They have iron cores. E. All of these choices are correct.
Consider a situation where you exert a force F on a crate of mass m, moving it at a speed v a distance d across a floor in a time interval t. The potential energy of the crate is __________
Fill in the blank(s) with correct word
If Earth rotated about its axis completely upright, what would we fail to experience?
a. holidays b. seasons c. weather d. day and night e. a 365 day year