How many degrees equivalent to 4 hours of right ascension?
A) 60°
B) 15°
C) 45°
D) 30°
E) 120°
A) 60°
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A monatomic ideal gas undergoes an isothermal expansion at 300 K, as the volume increased from 0.020 m3 to 0.040 m3. The final pressure is 120 kPa. The ideal gas constant is R = 8.314 J/mol ? K. The heat transfer to the gas is closest to
A) 3.3 kJ. B) 1.7 kJ. C) -3.3 kJ. D) -1.7 kJ. E) 0.00 kJ.
Why might the following nuclear reaction not be very good for energy production in a fission reactor?
A) The material only produces one neutron so the chain reaction will not be very efficient. B) The products are too large. C) There are too many products produced. D) The mass of the byproducts is too high and therefore the energy released will not be high enough. E) Interatomic attraction between the products will impede the efficient separation of the atoms from the unstable nuclei.
The frequency of a periodic wave is 325 Hz. If the wavelength is 50.0 cm, then what is the velocity of the wave?
A. 163 m/s B. 203 m/s C. 237 m/s D. 285 m/s E. 316 m/s
Motion in a circle at constant speed is motion with constant velocity
a. True b. False Indicate whether the statement is true or false