Opposite of the emission-line spectrum, because an atom's set of possible absorption lines have exactly the same wavelengths as its possible emission lines.

A. absorption line spectrum
B. emission line spectrum
C. continuous spectrum


Ans: A. absorption line spectrum

Physics & Space Science

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A baseball pitcher throws a curveball, and Bernoulli's Principle gives a fair description of why it takes such a drastic curve. If that pitcher could throw the exact same pitch on the Moon, then

A. it would curve more drastically, because gravity is so much weaker on the Moon. B. it would curve but not as much as on Earth, since the Moon's gravity is so weak. C. it would curve more drastically, because there is no counterforce from air pressure on the Moon. D. it would not curve at all, because the Moon has no atmosphere.

Physics & Space Science

The magnitude of the electric field in the radiation field from an antenna is inversely proportional to the distance from the antenna

Indicate whether the statement is true or false

Physics & Space Science

A melon is projected into the air with 100 J of kinetic energy in the presence of air resistance. When it returns to its initial level its kinetic energy is

A) less than 100 J. B) more than 100 J. C) 100 J. D) need more information

Physics & Space Science

A watermelon is a good example of

a. a compound. b. an element. c. a homogeneous mixture. d. a heterogeneous mixture.

Physics & Space Science