Suppose that the Sun shrank in size but that its mass remained the same. What would happen to the orbit of the Earth?
A) Earth's orbit would be unaffected.
B) The size of Earth's orbit would shrink, and it would take less than one year to orbit the Sun.
C) Earth's orbit would expand, and it would take more than one year to orbit the Sun.
D) Earth would change from a bound orbit to an unbound orbit and fly off into interstellar space.
A) Earth's orbit would be unaffected.
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Why does the Sun emit neutrinos?
A) Solar flares create neutrinos with magnetic fields. B) Fusion in the Sun's core creates neutrinos. C) Convection releases neutrinos, which random walk through the radiation zone. D) The Sun was born with a supply of neutrinos that it gradually emits into space. E) The Sun does not emit neutrinos.
There is no air on the Moon to scatter light and soften shadows
a. True b. False Indicate whether the statement is true or false
A 100-g block of copper is taken from a kiln and quickly placed into a beaker of negligible heat capacity containing 300 g of water. The water temperature rises from 15°C to 40°C. Given cCu = 0.10 cal/g•°C, and cwater = 1.00 cal/g•°C, what was the temperature of the kiln?
a. 500°C c. 790°C b. 635°C d. 535°C
The buoyant force that keeps a ship afloat is an example of __________ principle
Fill in the blank(s) with correct word