If a negative muon decays to form an electron-antineutrino pair and one other particle, the other particle may be a(n)
a. positron.
b. antineutrino.
c. mu neutrino.
d. electron.
c
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An ideal gas with ? = 1.30 occupies 7.0 L at 300 K and 200 kPa pressure. It is compressed adiabatically to 1/7 of its original volume, then cooled at constant volume to 300 K, and finally allowed to expand isothermally to 7.0 L
How much work does the gas do during this process? The ideal gas constant is R = 8.314 J/mol ? K = 0.0821 L ? atm/mol ? K. A) -980 J B) 6400 J C) -270,000 J D) -6400 J E) 980 J
The angle between the string of a pendulum and its equilibrium position and at its maximum displacement is the pendulum's
a. frequency b. velocity c. amplitude
A +5.0-?C point charge is placed at the 0 cm mark of a meter stick and a -4.0-?C charge is placed at the 50 cm mark. What is the net electric field at the 30 cm mark? (k = 1/4??0 = 8.99 × 109 N ? m2/C2)
A) 4.0 × 105 N/C B) 5.0 × 105 N/C C) 9.0 × 105 N/C D) 1.4 × 106 N/C
A refrigerator has a coefficient of performance of 4 . If the refrigerator absorbs 30 cal of heat from the cold reservoir in each cycle, the heat expelled (in cal) into the heat reservoir is
a. 40.5 b. 37.5 c. 36.5 d. 34.5 e. 22.5