A bicyclist starts down a hill with an initial speed of 2.0 m/s. She moves down the hill with a constant acceleration, arriving at the bottom of the hill with a speed of 8.0 m/s. If the hill is 12 m long, how long did it take the bicyclist to travel down the hill?
What will be an ideal response?
2.4 s
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The electrons are quantized in an atom. That means
A. the electrons are in bulk. B. the quantity of electrons keeps changing. C. the electrons can stay only in specific orbits. D. All of these choices are correct.
A circular orbit would have an eccentricity of:
A) 0. B) between 0 and 0.5. C) between 0.5 and 1. D) exactly 1.0. E) infinity.
The quark structure of the neutron is udd
Indicate whether the statement is true or false
A 2 solar mass main sequence star is at the same distance as a 0.2 solar mass main sequence star. Which star appears brighter?
A. It depends on the phase of the Moon B. The 0.2 solar mass main sequence star C. We cannot tell with the information given D. The stars are approximately the same brightness E. The 2 solar mass main sequence star