A lunar eclipse that occurs when the Moon moves completely into Earth's umbral shadow is called

a. a total solar eclipse.
b. a partial solar eclipse.
c. an annular eclipse.
d. a penumbral lunar eclipse.
e. a total lunar eclipse.


e

Physics & Space Science

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Estimate the rotational energy (in eV) for a diatomic hydrogen molecule in the L = 2 quantum state. (The equilibrium separation for the H2 molecule is 0.075 nm.)

A) 0.011 eV B) 0.022 eV C) 0.033 eV D) 0.044 eV E) 0.055 eV

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The buoyant force on a one-ton blimp hovering in air is

A) zero. B) one ton. C) less than one ton. D) more than one ton.

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How does the Kepler mission plan to detect Earth-like planets around other stars?

A) by measuring the Doppler shift in spectral lines as the central star is tugged to and fro by the planet B) by observing the slight dip in brightness of the central star as the planet transits C) by directly imaging the planet D) by observing the spectrum of the planet E) by measuring the slight shift in position of the central star as it is tugged to and fro by the planet

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Does an electric field exert a force on a beam of moving electrons? Assume the motion of the electrons is along the x axis and field is in the y direction

1.yes 2.no

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