Neglecting friction, if a Cadillac and Volkswagen start rolling down a hill together, the heavier Cadillac will get to the bottom
A. at the same time as the Volkswagen.
B. after the Volkswagen.
C. before the Volkswagen.
Answer: A
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When astronomers first saw the spectrum of a quasar they did not recognize it because
a) the lines were so far shifted towards the red b) its spectral signature was masked by the presence of the central supermassive black hole c) the chemical elements present in a quasar were unfamiliar d) the lines were so far shifted towards the blue e) it was too faint to produce spectral lines of any sort
The planet's orbital period is:
A) the time it takes it to rotate and have the same face toward us again. B) the time it takes to return to the same location in the sky, relative to the Sun. C) the time it takes for a satellite to orbit it. D) the time it takes for it to retrograde back to the same position as we pass it. E) the time its magnetic field takes to spin once.
A rem (roentgen equivalent in man) is defined as (the product of)
a. the dose in RBE. b. the dose in roentgen and the RBE factor. c. the dose in rad times the dose in roentgen. d. the dose in rad and the RBE factor. e. the dose in rad and energy of radiation.
Which core value of public health promotes and protects everyone's interest in health and well-being.
What will be an ideal response?