How are the speed v of a wave, its wavelength , and its period T related?

a. v = T
b. v = - T
c. v = 0
d. v = /T
e. v = T/


d

Physics & Space Science

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In a vacuum, which form of electromagnetic radiation travels slowest?

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a. stratosphere. b. troposphere. c. mesosphere. d. thermosphere.

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A 1 000-V battery, a 3 000-? resistor and a 0.50-µF capacitor are connected in series with a switch. The time constant for such a circuit, designated by the Greek letter, ?, is defined as the time required to charge the capacitor to 63% of its capacity after the switch is closed. What is the value of ? for this circuit?



a.
6.0 × 109 s

b.
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c.
1.7 × 10?7 s

d.
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Physics & Space Science