What is typically moved in a camera in order to focus the image on the detector (film or CCD)?
A. Lens
B. Detector/film
C. Object
D. All of the above.
Ans: A. Lens
Physics & Space Science
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Two flat rings each having outer diameter of 6 inches and inner diameter of 3 inches are parallel and 4 inches apart as shown. Determine the shape factors, F1-2 and F2-1, which are equal.
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A 20-?F capacitor is attached across a 1 000-V power supply. What is the net charge on the capacitor?
a. 10 mC b. 20 mC c. 40 mC d. none of the above
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What is the Stefan-Boltzmann constant?
What will be an ideal response?
Physics & Space Science
Negative charges, when released, accelerate toward regions of lower electric potential
Indicate whether the statement is true or false
Physics & Space Science