An electron is in an infinite square well that is 2.6 nm wide
What is the smallest value of the state quantum number n for which the energy level exceeds 100 eV? (h = 6.626 × 10-34 J ? s, mel = 9.11 × 10-31 kg, 1 eV = 1.60 × 10-19)
A) 43 B) 45 C) 44 D) 42 E) 41
A
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Which one of the following represent correct units for electric filed strength?
a. T b. N/C c. J / C d. N • m 2 • C-2
A force can be exerted on an object and yet do no work
Indicate whether the statement is true or false
Case 1: An electron is released from rest in a uniform electric field. Case 2: A proton is released from rest in a uniform electric field of the same magnitude as in case 1 . How does the electric potential energy of the charge-field system behave in these cases?
a. In both cases, the potential energy increases. b. In both cases, the potential energy decreases. c. In case 1 the potential energy increases, but in case 2 it decreases. d. In case 1 the potential energy decreases, but in case 2 it increases.
A Carnot heat engine could have an efficiency of 100% only if the temperature of the exhaust were at ________.
What will be an ideal response?