A Ferris wheel, rotating initially at an angular speed of 0.500 rad/s, accelerates over a 10.4-s interval at a rate of 0.040 0 rad/s2 . What angular displacement does the Ferris wheel undergo in this 10.4-s interval?
a. 7.4 rad
b. 0.21 rad
c. 2.2 rad
d. 0.0019 rad
a
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Two 10¢ coins (dimes) carrying identical charges are lying 2.5 m apart on a table
If each of these coins experiences an electrostatic force of magnitude 2.0 N due to the other coin, how large is the charge on each coin? (k = 1/4??0 = 9.0 × 109 N ? m2/C2) A) 2.6 ?C B) 26 ?C C) 6.7 ?C D) 5.2 ?C E) 52 ?C
What was the first evidence that quasars were different from astronomical objects before they were observed in visual wavelengths?
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Which of the following is not visible during totality of a total solar eclipse?
a. the corona of the Sun b. the chromosphere of the Sun c. prominences d. the photosphere of the Sun e. All of the other choices are correct.
The electric field shown is produced by a single point charge at the center of the picture
 What force might a charge placed at location D feel? a. zero b. an upward force c. a downward force d. a force to the right e. a force to the left