A block of wood and a block of copper will feel neither hot nor cold to your touch when they each have
A) equal temperatures.
B) your temperature.
C) equal conductivities.
D) none of the above
Answer: B
Physics & Space Science
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What is the frequency of a wave if its period is 0.25 seconds?
A. 1.0 Hz B. 0.25 Hz C. 12 Hz D. 4.0 Hz.
Physics & Space Science
The Sun is a ball of gas that is on fire
Indicate whether the statement is true or false
Physics & Space Science
The circuit below contains 3 100-W light bulbs and a capacitor. The emf is 110 V. Which light bulb(s) is(are) brightest? (Assume the capacitor is fully charged.)
a.
A
b.
B
c.
C
d.
A and B
e.
All three are equally bright.
Physics & Space Science
Determine the rms current for the circuit
a.
55 mA
b.
77 mA
c.
99 mA
d.
0.19 A
e.
61 mA
Physics & Space Science