Jupiter is about 5 AU from the Sun. In a ten billion to one scale model, Jupiter is
A) about 15 meters from the Sun. B) about a kilometer from the Sun.
C) about 75 meters from the Sun. D) less than one meter from the Sun.
C
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The sky appears to rotate eastward around Earth each day, but that is a consequence of the westward rotation of Earth
a. True b. False Indicate whether the statement is true or false
The Chandra X-ray telescope must use:
A) a lens of fluorite. B) grazing incidence optics to focus the short wavelengths. C) a Newtonian reflecting design to avoid chromatic aberration. D) X-ray film instead of CCDs for imaging. E) a Schmidt corrector plate to avoid spherical aberration.
Which of these, both of the same length, has the greater electrical resistance?
A) a thick copper wire B) a thin copper wire C) both about the same D) need more information
A 140-g block of copper is taken from a kiln and quickly placed into a beaker of negligible heat capacity containing 290 g of water. The water temperature rises from 6.8°C to 26.8°C. Given cCu = 0.10 cal/g/°C, and cwater = 1.00 cal/g/°C, what was the temperature of the kiln?
a. 720°C b. 387°C c. 682°C d. 441°C e. 68.2°C