Look at the symbol. Which component in a circuit does it represent? A. conductor B. AC power source C. DC power source D. switch

Which statements accurately describe the atmospheres of the inner planets? Select three options. Mars has no atmosphere. Mercury has no atmosphere. Mars and Venus have similar atmospheres. Earth and Venus have similar atmospheres.

if you had a single pure mystery substance and cut it half over and over again until you a bunch really had two other different mystery substances that original substance would have been an

A horn on a boat sounds a warning, and the sound penetrates the water. How does the frequency of the sound in the air compare to its frequency in the water? How does the wavelength in the air compare to the wavelength in the water?

How long does water evaporation take? What factors influence it?

A freshly brewed cup of coffee has temperature 95°c in a 20°c room. when its temperature is 65°c, it is cooling at a rate of 1°c per minute. when does this occur? (round your answer to two decimal places.)

Why might a plant that normally grows in one environment not grow well in a different environment?

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Which rock is made mostly of dark, fine-grained silicate minerals, chiefly plagioclase feldspar and pyroxene, and magnetite?

What does the atomic number tell us about an atom of a certain element?

A certain chemical reaction experiences a 7.50 x 10-7 kilogram loss in mass. If this mass were to be totally converted to energy, what would be the magnitude of that energy.