A 1000 
resistor is in a circuit with 30.0 mA flowing through it. A voltmeter with internal resistance 1000 
is used to measure the voltage across the resistor. What is the reading from the voltmeter if 30.0 mA still flows in the circuit?
A. 30.0 V
B. 29.9 V
C. 27.0 V
D. 15.0 V
E. 3.00 V
D. 15.0 V
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Vision Problems: A little known fact is that both Robinson Crusoe and Friday wore eyeglasses. As it so happens, Robinson Crusoe was farsighted while Friday was nearsighted. Whose eyeglasses did they use whenever they wanted to start a fire by focusing the sun's rays?
A. Robinson Crusoe's B. Friday's C. Both would work equally well. D. Both actually worked, but Friday's was a little bit better. E. Neither's worked, but fortunately they were in possession of matches.
Given that the charge on an up quark is +2/3 and the charge on a down quark is ?1/3, which combination represents a neutron?
A. uud B. udd C. uuu D. ddd
When an initially uncharged capacitor is charged through a 25-k? resistor by a 75-V dc ideal power source, it takes 0.23 ms for the capacitor to reach 50% of its maximum charge? What is the capacitance of this capacitor?
What will be an ideal response?
A hot blackbody emits a(n) _______________ spectrum
Fill in the blank(s) with correct word