A pair of parallel plates, forming a capacitor, are charged. The plates are pulled apart to quintuple the original separation, the charges on the plates remaining the same. What is the ratio of the final energy stored to the original energy stored?
a. 25
b. 5
c. 1
d. 1/5
e. 1/25
b
Physics & Space Science
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What will be an ideal response?
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Indicate whether the statement is true or false
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a. a constant angular speed. c. a constant moment of inertia. b. an angular acceleration. d. an increasing moment of inertia.
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A doubly charged ion with velocity 6.9 × 106 m/s moves in a path of radius 30 cm in a magnetic field of 0.80 T in a mass spectrometer. What is the mass of this ion?
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Physics & Space Science