Light energy, according to one theory of physics, is transmitted by small particles known as ____.

a. atoms
b. photons
c. electrons
d. photoelectrons


b. photons

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A type of support that suspends pipe from the ceiling is a(n):

a. Pipe clamp b. Pipe hanger c. Pipe shoe d. Expansion loop

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Las dimensiones de un bloque de concreto típico son _____ pulgadas.

a. 8 × 8 × 16 b. 4 × 4 × 8 c. 6 × 12 × 8 d. 2 × 4 × 12

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Open land that is not suited for row crops can be utilized for growing livestock

Indicate whether the statement is true or false

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There are 640 acres in a square mile. How many square miles are there in 80 acres?

a. 1/16 b. 1/8 c. 1/4 d. 1/2

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