In addition to the proper motion, we also need the ________ to find the transverse velocity of a star across our line of sight
A) mass B) temperature C) composition D) parallax E) color
D
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The phase angle of an LRC series circuit with an inductive reactance of 200 ?, a resistor of 200 ? and a certain capacitor at 1000 Hz is 40.0°. What is the value of the capacitance in this circuit?
A) 1.95 µF B) 2.95 µF C) 3.95 µF D) 4.95 µF E) 5.95 µF
The equation for the head loss is valid for both laminar and turbulent flows. We wish to pump the flow rate Q through a long pipe of diameter D, to be selected. The head loss is proportional to what power of D, assuming a constant friction factor?
What is the magnitude of the potential difference across the 20-? resistor?
a.
3.2 V
b.
7.8 V
c.
11 V
d.
5.0 V
e.
8.6 V
In a camera, the image focused on the film is
A. real and upright. B. real and inverted. C. virtual and upright. D. virtual and inverted. E. technically a mirage.