Newton's version of Kepler's third law states: p2 = × a3 In this equation, what does G represent?
A) the orbital period
B) the average distance between the two objects
C) the masses of the two objects
D) the universal gravitational constant
D) the universal gravitational constant
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Multiple star systems in our galaxy
A) are extremely rare, making up less than 1% of the total B) are very common, making up about 50% of the total C) are fairly common, making up around 30% of the total D) do not exist
Density
What will be an ideal response?
You look at yourself in a plane mirror. If you move away from the mirror and look at yourself again, you now see more of yourself
a. True b. False Indicate whether the statement is true or false
A car accelerates from rest to 30 km/h. Later, on a highway it accelerates from 30 km/h to 60 km/h. Which takes more energy, going from 0 to 30, or from 30 to 60?
(a) 0 to 30 km/h. (b) 30 to 60 km/h. (c) Both are the same.