Solar flares have no known effect on Earth
a. True
b. False
Indicate whether the statement is true or false
False
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For an atom of 12Mg, the number of shells containing electrons is ______________
Fill in the blank(s) with correct word
Which of the following is considered by biologists to be a likely place where life first arose on Earth?
A) on meteorites that landed on Earth B) on land surfaces that got moderately heavy rainfall C) in hot water near undersea volcanoes D) deep underground
An object that is moving in a linear path with an acceleration in the direction of motion has a(n) ______________ velocity
a. constant b. increasing c. decreasing d. none of these
When 10 kcal of heat is added to 2.0 kg of a substance, its temperature increases 20 C°. What is the specific heat of the substance?