Photon A has an energy of 3.3 × 10^–19 J. Photon B has 4 times the frequency of Photon A. What is the energy of Photon B?
a. 8.3E–20 J
b. 1.7E–19 J
c. 1.3E–18 J
d. 6.6E–19 J
e. 5.3E–18 J
c
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What is the relationship between color and wavelength for light?
a. Wavelength increases from blue light to red light b. Wavelength decreases from blue light to red light c. All colors of light have the same wavelength. d. Wavelength depends on intensity not color.
Stars originate as large bodies of slowly rotating gas. Because of gravity, these clumps of gas slowly decrease in size. The angular velocity of a star increases as it shrinks because of
A. conservation of angular momentum B. conservation of linear momentum C. conservation of energy D. the law of universal gravitation E. conservation of mass
As you go higher and higher above the surface of the Earth, the acceleration of a freely falling body __________
Fill in the blank(s) with correct word
Calculate the linear speed due to the Earth's rotation for a person at the equator of the Earth. The radius of the Earth is 6.40 × 10^6 m
a. 74.0 m/s b. 233 m/s c. 465 m/s d. 73.0 m/s