The Earth intercepts 1.27 × 10^17 W of radiant energy from the Sun. Suppose the Earth, of volume 1.08 × 10^21 m3, was composed of water. How long would it take for the Earth at 0°C to reach 100°C, if none of the energy was radiated or reflected back out into space?
a. 26.9 y
b. 113 y
c. 2.69 × 10^4 y
d. 1.13 × 10^5 y
e. 2.69 × 10^7 y
d
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The solar system is a complex system of moving masses held together by ______________ forces
Fill in the blank(s) with correct word
The ____ is (are) the hot gases that are the moving extension of the sun's corona
a. spicules b. prominences c. flares d. supergranules e. solar wind
Neglecting friction, a small ball and a similar large ball, at rest, are allowed to roll down an incline. for only one second. At this instant, the large ball will have a greater
A) potential energy. B) kinetic energy. C) speed. D) all of the above E) impossible to predict with the information given
Electrons are used to produce X-rays by allowing a beam of electrons to strike a heavy metal surface. When the speeds of the electrons in the beam is increased, this results in:
A. X-rays being produced having higher energies B. X-rays having longer wavelengths being produced C. Faster X-rays being produced D. More X-rays being produced per unit time