The Chandrasekhar limit is the largest ________ a white dwarf can have.
A. mass
B. temperature
C. speed
D. wavelength
Answer: A
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Supergiants are about as common as the Sun
a. True b. False Indicate whether the statement is true or false
An air-filled capacitor has a potential difference between the plates of 80 V. If the charge on each of the plates of the capacitor has magnitude 8.0 ?C, what is the electrical energy stored by this capacitor?
A) 640 µJ B) 320 µJ C) 50 nJ D) 60 nJ E) 30 pJ
A proton travels at a speed of 5.0 × 107 m/s through a 1.0-T magnetic field. What is the magnitude of the magnetic force on the proton if the angle between the proton's velocity and the magnetic field vector is 30°? (e = 1.60 × 10-19 C)
A) 2.0 × 10-12 N B) 4.0 × 10-14 N C) 2.0 × 10-14 N D) 4.0 × 10-12 N
The Eiffel tower in Paris is made primarily of iron, whose coefficient of linear expansion is about 10 × 10^-6/°C. On a cold day when the temperature is -10°C the Eiffel tower is 300 meters tall. Its height on a hot day when the temperature is 40°C is 300.15 m
Indicate whether the statement is true or false