The visible color of electromagnetic radiation that has the shortest wavelength is
A) red.
B) orange.
C) green.
D) blue.
E) violet.
E
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Inflation explains the horizon and flatness problems
a. True b. False Indicate whether the statement is true or false
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
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.
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.