What force balances the sun’s gravity?
Answer: Centrifugal force
Physics & Space Science
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Radar maps of Venus show impact craters
Indicate whether the statement is true or false
Physics & Space Science
The black hole in the core of a Seyfert galaxy consumes the equivalent of hundreds of solar masses a day
Indicate whether the statement is true or false
Physics & Space Science
Water at 4°C will expand when it is slightly
A) cooled. B) warmed. C) both of these D) none of the above
Physics & Space Science
The capacitance per unit length of a very long coaxial cable, made of two concentric cylinders, is 50 pF/m
What is the radius of the outer cylinder if the radius of the inner one is 1.0 mm? (k = 1/4??0 = 8.99 × 109 N ? m2/C2) A) 0.50 mm B) 4.0 mm C) 2.0 mm D) 3.0 mm E) 1.0 mm
Physics & Space Science