What is the frequency, in hertz, of a sound wave (v = 340 m/s) with a wavelength of 0.20 m?

1.7 × 10^3 Hz

Physics & Space Science

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Which form of electromagnetic radiation is able to easily reach Earth's surface through an atmospheric window?

a. microwave b. radio c. X-rays d. gamma e. ultraviolet

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Physics & Space Science

Helium fusion results in the production of

A) iron. B) nitrogen. C) carbon. D) oxygen. E) hydrogen.

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Physics & Space Science

Consider a situation where you exert a force F on a crate of mass m, moving it at a speed v a distance d across a floor in a time interval t.The power you supply to the crate is Fd/t

a. True b. False Indicate whether the statement is true or false

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Physics & Space Science

Which of the following statements about the atomic theory of matter is true?

Einstein helped prove the atomic theory by explaining x-ray production in 1905. The atomic theory of matter was universally accepted at the end of the nineteenth century. Proust put forth the law of definite masses, saying that a compound is made up of numbers of atoms so that the total of each element has equal mass. Dalton proposed that atoms of each element have characteristic properties. Atoms were originally thought of as particles, but the work of Dalton and Brown helped prove that atoms were waves.

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Physics & Space Science