Tidal friction caused by Earth's stretching from the Moon's gravity is gradually slowing down the rotation of Earth
Indicate whether the statement is true or false
TRUE
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How does a shield affect radiation?
What will be an ideal response?
Complete the following statement: The sum of the magnitudes of the currents directed into a junction
a) equals the sum of the magnitudes of the currents directed out of the junction. b) is less than the total current directed out of the junction. c) equals the current that is directed along one of the lines out of the junction. d) is divided equally among the number of lines directed out of the junction. e) is greater than the total current directed out of the junction.
Over which of the following locations is it possible to have a synchronous satellite?
A. New York City B. Los Angeles C. North Pole D. equator
In radioactive dating, carbon-14 is often used. This nucleus emits a single beta particle when it decays. When this happens, the resulting nucleus is
A) still carbon-14. B) boron-14. C) nitrogen-14. D) carbon-15. E) carbon-13.