What does the exclusion principle say?
A) No two particles of any type can ever occupy the same quantum state at the same time.
B) If a particle has a precisely defined position it is excluded from having a precisely defined momentum.
C) The laws of quantum mechanics are excluded from our common sense.
D) Two fermions cannot occupy the same quantum state at the same time.
D
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A proton (mass = 1.67 × 10?27 kg, charge = 1.60 × 10?19 C) moves from point A to point B under the influence of an electrostatic force only. At point A the proton moves with a speed of 50 km/s. At point B the speed of the proton is 80 km/s. Determine the potential difference VB?VA.
A. +20 V B. ?20 V C. ?27 V D. +27 V E. ?40 V
Under what conditions will prebiotic molecules NOT be manufactured in Miller—Urey experiments?
A) if ammonia (NH3 ) is present in the flask B) if methane (CH4 ) is present in the flask C) if oxygen (O2 ) is present in the flask D) if carbon dioxide (CO2 ) is present in the flask
An adiabatic process is characterized by the absence of
A) entropy. B) pressure change. C) heat exchange. D) temperature change. E) none of the above
Energy in Capacitors: A 5.0 ?F capacitor has a potential difference of 5.0 V applied across its plates. If the potential difference across its plates is increased to 8.0 V, how much additional energy does the capacitor store?
A. 98 ?J B. 200 ?J C. 23 ?J D. 45 ?J