The supercontinent of Pangaea formed during the

A) Cenozoic.
B) Paleozoic.
C) Mesozoic.
D) Precambrian.


Answer: B

Physics & Space Science

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In each of the following situations, point charge q moves in a uniform magnetic field B. The strength of the magnetic field is indicated by the density of field lines. In each situation, the initial speed v of the charge is the same. For which situation(s) will the charge q have the largest displacement in a certain time T?

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According to quantum theory, the electron in a particular quantum state of the hydrogen atom has

A) a definite position. B) a definite energy. C) a definite velocity. D) All of the above. E) None of the above.

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In ultrasound the wavelength of the sound is much smaller than in normal sound

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

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A kilometer contains 1 million meters

Indicate whether the statement is true or false

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