The visible color of electromagnetic radiation that has the shortest wavelength is

A) red.
B) orange.
C) green.
D) blue.
E) violet.


E

Physics & Space Science

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Charge of uniform density 50 nC/m3 is distributed throughout the inside of a long nonconducting cylindrical rod (radius = 5.0 cm). Determine the magnitude of the potential difference of point A (2.0 cm from the axis of the rod) and point B (4.0 cm from the axis)

a. 2.7 V b. 2.0 V c. 2.4 V d. 1.7 V e. 3.4 V

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Inflation explains the horizon and flatness problems

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

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Charged particles from the Sun enter Earth's atmosphere close to the magnetic poles and cause

a. global cooling. b. global warming. c. auroras. d. ozone depletion.

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What happens to the amplitude of the induced emf when the rate of rotation of a generator coil is doubled?

1.It becomes four times larger. 2.It becomes two times larger. 3.It is unchanged. 4.It becomes one-half as large. 5.It becomes one-fourth as large.

Physics & Space Science