Small deviations in a planet's orbital motion:
A) show we don't fully understand gravitational forces yet.
B) indicate the presence of an extensive atmosphere.
C) indicate the presence of a powerful magnetic field.
D) imply the nearby presence of a massive body.
E) show the planet's orbit isn't stable.
D
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A non-uniform meter stick is found to balance on a knife edge at the 60-cm mark. Where is the center of gravity of the meter stick?
a. at the 40-cm mark b. at the 45-cm mark c. at the 50-cm mark d. at the 55-cm mark e. at a position not given
Which statement best describes what was called the solar neutrino problem?
A) Early experiments designed to detect solar neutrinos found them, but in fewer numbers than had been expected. B) It referred to the fact that neutrinos are extremely difficult to detect. C) Our understanding of fusion in the Sun suggested that neutrinos should be destroyed before they arrive at Earth, yet neutrinos were being detected. D) No one understood how it could be possible for neutrinos to be produced in the Sun.
With volume and molar quantity held constant, by what factor does the absolute temperature change for an ideal gas when the pressure is five times bigger?
a. 1/5 b. 1 c. 5 d. 25
The ground rises and sinks regularly because of tidal effects
Indicate whether the statement is true or false