Other than Earth, the only known object in the solar system to have surface water and ice is ______________
Fill in the blank(s) with correct word
Io
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When it comes near a heavy nucleus, a gamma ray, which is a high energy photon, can "disappear," and in its place there will be produced an electron and a positron, which both have mass. This pair production is an example of
a. time dilation b. length contraction c. the equivalence of mass and energy d. the principle of relativity e. none of the above
A 1.15-kg beaker (including its contents) is placed on a vertical spring scale. When the system is sent into vertical vibrations,
it obeys the equation y = (2.3 cm)cos(17.4 s-1 t). What is the spring constant of the spring scale, assuming it to be ideal?
Consider two cylinders of gas identical in all respects except that one contains oxygen O2 and the other helium He
Both cylinders initially contain the same volume of gas at 0°C and 1 atm of pressure and are closed by a movable piston at one end. Both gases are now compressed adiabatically to one-third their original volume. (a) Which gas will show the greater temperature increase? A. the O2 B) the He C) Neither; both will show the same increase. D) It is impossible to tell from the information given. (b) Which gas will show the greater pressure increase? A. the O2 B) the He C) Neither; both will show the same increase. D) It is impossible to tell from the information given.
According to our theory of solar system formation, why do we find some exceptions to the general rules and patterns of the planets?
A) Our theory is not quite correct because it cannot explain these exceptions. B) Most of the exceptions are the result of giant impacts or close gravitational encounters. C) The exceptions probably represent objects that formed recently, rather than early in the history of the solar system. D) The exceptions probably represent objects that were captured by our solar system from interstellar space. E) The exceptions are probably the result of the Sun passing very close to another star billions of years ago.