Which one of the following is the correct unit for the time constant of an RL circuit?
A) H/?
B) (V?s)/(A??)
C) s
D) All of the answers are correct.
E) None of the answers is correct.
D
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The most recent estimates are that genetics contribute approx. ____________ to the development of personality characteristics such as shyness or activity level. *
Fill in the blank(s) with the appropriate word(s).
If we could put all the asteroids together, their total mass would be ________
A) about the mass of Mercury B) about the mass of Earth C) greater than the mass of Earth but less than the mass of Jupiter D) much less than the mass of any terrestrial planet
An isolated air-filled parallel-plate capacitor that is no longer connected to anything has been charged up to Q = 2.9 nC. The separation between the plates initially is 1.20 mm, and for this separation the capacitance is 31 pF
Calculate the work that must be done to pull the plates apart until their separation becomes 5.30 mm, if the charge on the plates remains constant. (?0 = 8.85 × 10-12 C2/N • m2 )
Suppose that the speed of an electron traveling 1.0 km/s is known to an accuracy of 1 part in 10,000 (that is, within 0.01%)
What is the minimum uncertainty in the position of this electron? (melectron = 9.11 × 10-31 kg, h = 6.626 × 10-34 J ? s)