If Earth is closest to the Sun in January of each year, what can we say about the speed of Earth in its orbit around the Sun at this time of year?
In January the speed of Earth in its orbit around the Sun will be the greatest that it is
all year.
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Which of these are nearly 90 degrees to the orbit plane of Uranus?
a. Uranus' equator b. the orbital planes of its major satellites c. the orbital plane of its rings d. Uranus' equator, the orbital planes of its major satellites, and the orbital plane of its rings.
In a fission reaction, such as occurs in a nuclear power plant,
A) thermal energy and other forms of energy are converted to nuclear energy. B) nuclear energy is converted to thermal energy and other forms of energy. C) heat is converted to work. D) nuclear energy is created. E) energy is created.
Monochromatic light of wavelength 500 nm is incident normally on a grating. If the third-order maximum of the diffraction pattern is observed at 32.0°, what is the total number of maxima can be seen?
A) 5 B) 7 C) 10 D) 11 E) 8
The date is September 21 and the Moon is at full
phase. An observer who sees this moon on her overhead meridian at this time a) sees the Sun setting. b) sees the Sun rising. c) cannot see the Sun. d) sees the Sun overhead.