The current definition of the standard meter of length is based on
A) the distance between the earth's equator and north pole.
B) the distance between the earth and the sun.
C) the distance traveled by light in a vacuum.
D) the length of a particular object kept in France.
C
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Absolute zero is
a. 0 K. b. – 459.67°F. c. – 273.15°C. d. 0 on any temperature scale.
A starship is built to plans that state it is to be constructed 100. meters long. It is launched and as it coasts by the Earth, it is seen to be shortened to 5.48 meters long
(a) How fast is it moving? (b) The ship's crew measure the length of the ship to be how long?
In comparison with other fundamental forces, the universal gravitational constant G indicates that gravity is
A) very weak. B) strong. C) very strong.
A mass spectrometer separates
A) ions of different elements. B) different-mass ions of the same element. C) different-mass ions of the same speed. D) all of the above E) none of the above