By what method of heat transfer does a microwave oven transfer heat to the food being cooked?
What will be an ideal response?
by radiation
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An atom with fewer electrons than protons is a
a. semiconductor b. superconductor c. positive ion d. negative ion e. none of the above
When the Sun rises it is located in the constellation Gemini. When the Sun sets later that same day it will be
A) in the constellation Aries. B) in the constellation Taurus. C) in the constellation Gemini. D) in the constellation Cancer. E) in the constellation Leo.
Two long bar magnets are aligned so that north poles face each other. The magnets are separated by 1 cm, and a repulsive force between the north poles is 0.04 N. When the separation is increased to 2 cm the force will be
A. 0.020 N. B. 0.050 N. C. 0.40 N. D. 0.025 N. E. 0.010 N.
Which of the following statements about constellations is false?
A) There are only 88 official constellations. B) Some constellations can be seen from both the Northern and Southern hemispheres. C) Some constellations can be seen in both the winter and summer. D) It is possible to see all the constellations from Earth's equator. E) Most constellations will be unrecognizable hundreds of years from now.