The Chandrasekhar mass limit is:
A) .08 solar masses.
B) .4 solar masses.
C) 1.4 solar masses.
D) 3 solar masses.
E) 8 solar masses.
C
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A steel bracket ABCD (EI 5 4.2 3 106 N?m2), with span length L 5 4.5 m and dimension a 5 2 m, is subjected to load P 5 10 kN at D. The maximum deflection at B is approximately:
(A) 10 mm
(B) 14 mm
(C) 19 mm
(D) 24 mm
The area in the Sun's atmosphere located above the chromosphere (1,500 - 10,000 km) where the temperature rises dramatically is called the
A) photosphere. B) corona. C) solar wind. D) transition zone. E) convection zone.
When snow falls, the surrounding air is normally
A) cooled. B) warmed. C) both of these D) none of the above
An alpha particle is moving at a speed of 5 × 105 m/s in a direction perpendicular to a uniform magnetic field of strength 4 × 10-2 T
The charge on an alpha particle is 3.2 × 10-19 C and its mass is 6.6 × 10-27 kg. (a) As the alpha particle moves, its velocity is directed (b) The magnitude of the force on the alpha particle is