A bicyclist starts a timed race at 6.0mi/h In order to win, he must average 21mi/h Assuming constant acceleration from the start, how fast must he be traveling at the end of the race?
A) 36 mi/h B) 30 mi/h C) 42 mi/h D) 24 mi/h
A
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The _____ gives astronomers a way to measure the strength of magnetic fields on the Sun
A) Casimir effect B) Dember effect C) Zeeman effect D) Compton effect
1.8 ?F and 3.6 ?F capacitors are connected in series and then charged by a 24. volt battery. The battery and capacitors are disconnected and the capacitors reconnected in parallel (plus to plus, minus to minus)
(a) What charge initially flowed from the battery to the series combination? (b) What total charge is on the final positive plates? (c) What final voltage is across the parallel combination?
What is Sgr A??
A) a source of bright radio emission in the center of our galaxy B) a source of bright ultraviolet light near the center of our galaxy C) the brightest star in the constellation Sagittarius D) the bulge at the center of our galaxy E) a source of bright X-ray emission coming from the entire constellation of Sagittarius
When the Moon is 90° east of the Sun, it will be in the ______________ phase
Fill in the blank(s) with correct word