The acceleration of a ball as it rolls down a ramp is 4 m/s2 . The ball is referred to 2 s after it starts to roll. The velocity acquired after starting from rest is 8 m/s
a. True
b. False
Indicate whether the statement is true or false
True
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The constant K in Kepler's Third Law is the same for all the planets in our solar system, but is different for planetary systems orbiting other stars
Indicate whether the statement is true or false
Which of the following best explains why an interstellar ramjet could, in theory, achieve continuous acceleration?
A) It takes advantage of theoretically possible loopholes in Einstein's theory of relativity. B) It uses fuel that is more efficient than any other known fuel. C) It collects its fuel as it goes, rather than having to carry the weight of fuel along with it. D) It has such a large fuel tank that it will essentially never use up all the fuel it carries. E) Its speed always gets faster because time dilation changes the rate at which time flows.
If aluminum arsenate is AlAsO4, the ionic charge on the arsenate ion must be ______________
Fill in the blank(s) with correct word
Nitrogen dioxide and dinitrogen tetroxide are really
A) the same compound. B) different compounds. C) not possible as compounds. D) best represented as NO.