How many calories are equal to one BTU? (One calorie = 4.186 J, one BTU = 1054 J.)

a. 0.252
c. 252
b. 3.97
d. 397


C

Physics & Space Science

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Which of the following is true of life on Earth?

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Large, smooth, dark plains on the moon are called ____

a. ejecta blanket b. central peak c. maria d. multiringed basin e. Sinuous rilles

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Nuclear Reactions: The equation shows a fission reaction:U + n ? Nb + X + 4 nWhat is the missing term X in the equation?

A. Ag
B. Sb
C. Sb
D. Ag
E. Sb

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Tornadoes are rapidly rotating winds that blow counterclockwise around a small area of intense

A) high pressure. B) low pressure.

Physics & Space Science