The melting point of aluminum is 660°C, the latent heat of fusion is 4.00 × 105 J/kg, and its specific heat is 900 J/(kg K). How much heat must be added to 500 g of aluminum at 27°C to completely melt it?
A) 485 kJ
B) 395 kJ
C) 273 kJ
D) 147 kJ
E) 14 kJ
A
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According to Heisenberg's uncertainty principle, the more we know about a particle's momentum, the less we know about its
A) kinetic energy. B) mass. C) speed. D) location. E) none of the above
The symbol indicating the number of neutrons in a nucleus is __________
Fill in the blank(s) with correct word
A circular loop of radius 0.10 m is rotating in a uniform magnetic field of 0.20 T. Find the magnetic flux through the loop when the plane of the loop and the magnetic field vector are perpendicular
A) zero B) 3.1 × 10-3 T?m2 C) 5.5 × 10-3 T?m2 D) 6.3 × 10-3 T?m2 E) 9.2 × 10-3 T?m2
If you wanted to observe stars behind a molecular cloud, in what wavelength of light should you observe?
A) ultraviolet B) visible C) infrared D) x-ray E) gamma ray