Which of the following never goes in retrograde motion?
A) Mars B) Jupiter C) the Sun D) Saturn E) Venus
C
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Two identical objects are released from rest from heights R and 2R above the surface of the Earth. After traveling a distance R/2, which object has the larger speed?
Each pattern shown below would appear on a screen when monochromatic light of wavelength ? first passes through a narrow slit of width a and then strikes a screen. The darkest areas on the page represent the brightest areas on the screen. In which case does the slit have the narrowest width?
a.
b.
c.
An electric toaster operating on 120 volts draws a current of 6 amperes. The resistance of the toaster is __________
Fill in the blank(s) with correct word
If the Earth rotated on its axis more slowly than it does now:
A) its months would be longer B) its years would be shorter C) its days would be shorter D) its days would be longer E) its months would be shorter