Gamma ray bursts never last longer than a minute
a. True
b. False
Indicate whether the statement is true or false
True
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Rank the following five capacitors from greatest to smallest capacitance, noting any cases of equality
(a) a 20-µF capacitor with a 4-V potential difference between its plates (b) a 30-µF capacitor with charges of magnitude 90 µC on each plate (c) a capacitor with charges of magnitude 80 µC on its plates, differing by 2 V in potential, (d) a 10-µF capacitor storing energy 125 µJ (e) a capacitor storing energy 250 µJ with a 10-V potential difference
1.e > a > b > d > c 2.e > d > a > b > c 3.c > b > a > d > e 4.b > a = c > d = eMotion in a circle at constant speed is motion with constant acceleration
Indicate whether the statement is true or false
Magnetic Field of a Long Wire: A negatively charged particle -Q is moving to the right, directly above a wire having a current I flowing to the right, as shown in the figure. In what direction is the magnetic force exerted on the particle due to the current?
A. into the page B. out of the page C. downward D. upward E. The magnetic force is zero because the velocity is parallel to the current.
When you compress air with a tire pump, the air temperature in the tire
A) increases. B) decreases. C) remains unaffected. D) none of the above