We know the white dwarf star Sirius B has a mass comparable to the Sun because
a. of its measured color.
b. of its measured temperature compared to Sirius A.
c. it is part of binary star system with Sirius A.
c
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A 500-turn circular loop 15.0 cm in diameter is initially aligned so that its axis is parallel to the Earth's magnetic field. In 2.77 ms the coil is flipped so that its axis is perpendicular to the Earth's field. If a voltage of 0.166 V is induced in the coil, what is the value of the Earth's magnetic field?
Which of the following is NOT an example of a demographic characteristic?
A. gender B. purchasing preferences C. age group D. income
A particle with charge q is located inside a cubical gaussian surface. No other charges are nearby. If the particle can be moved to any point within the cube, what maximum value can the flux through one face approach?
1. 0 2. q/2?0 3. q/6 ?0 4. q/8 ?0 5. depends on the size of the cube
What are the circumstances under which convection can occur in a substance?
A) when the substance is subjected to a strong magnetic field B) when the substance is strongly cooled from underneath C) when dense material is being added to the substance D) when the substance is strongly shaken or disturbed by a strong wind E) when the substance is strongly heated from underneath