During what month will the full moon achieve its maximum altitude, as observed from Wash ington, D.C. (39°N)? When will it have its minimum altitude?
The full moon will be observed at maximum altitude during the month of December
from latitude 39°N. Minimum altitude will be observed during the month of June.
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An intermediately wound barred spiral galaxy would, in Hubble's system, be:
A) BS2. B) BSE.5. C) SBb. D) S2B. E) SIrr.
The best shape for an automobile to have is one that is streamlined both in the front and in the back. The reason for this is
A. to ensure the air flow remains laminar all the way around the vehicle. B. to use the viscosity of the air to help propel the automobile forward. C. to improve fuel efficiency when driving in reverse. D. to avoid uneven air flows that might push the vehicle sideways.
Find the binding energy (in MeV) of carbon-12. Assume: mC = 12.000 000 u m p = 1.007 825 u m n = 1.008 665 u u = 1.66 × 10^?27 kg
a. 14.8 b. 0.511 c. 9.11 d. 92.3 e. 46.2
A 406.0 kg copper bar is put into a smelter for melting. The initial temperature of the copper is 300.0 K. How much heat must the smelter produce to completely melt the copper bar?
(The specific heat for copper is 386 J/kg ? K, the heat of fusion for copper is 205 kJ/kg, and its melting point is 1357 K.) A) 2.49 × 105 kJ B) 1.66 × 1011 kJ C) 1.66 × 108 kJ D) 2.96 × 105 kJ