What does Einstein's general theory of relativity tell us about two white dwarfs orbiting one another very close together?
A) They will emit gravitational waves that carry energy and angular momentum away from the system, causing the white dwarfs to gradually spiral inward toward each other and eventually merge.
B) They will emit gravitational waves that carry energy and angular momentum toward the system, causing the white dwarfs to gradually spiral away from one another and eventually fly far apart.
C) They will emit gravitational waves that carry energy and angular momentum away from the system, causing the white dwarfs to quickly spiral away from one another.
D) They will orbit one another forever.
A) They will emit gravitational waves that carry energy and angular momentum away from the system, causing the white dwarfs to gradually spiral inward toward each other and eventually merge.
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(A) 48 in.4 (B) 56 in.4 (C) 80 in.4 (D) 96 in.4
An auto is coasting on a level road. It weighs 10. kN. How much work is done by gravity as it moves horizontally 150. meters?
What will be an ideal response?
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a. True b. False Indicate whether the statement is true or false
If a metallic wire of cross-sectional area 3.0 × 10^-6 m2 carries a current of 9.1 A and has a mobile charge density of 4.24 × 10^28 carriers/m3, what is the average drift velocity of the mobile charge carriers? (charge value = 1.6 × 10^-19 C)
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