The closest known star to our solar system is Alpha Centauri, which is approximately 4.30 light years away
A spaceship with a constant speed of 0.800c relative to the earth travels from Earth to this star.
(a) How much time would elapse during the trip on a clock on board the spaceship?
(b) How much time would elapse during the trip on a clock on Earth?
(a) 3.23 y (b) 5.38 y
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What is the result of adding 23.4 to 91.237 and then subtracting 23.4?
A) 91.237 B) 91.2 C) 91.3 D) 91.0 E) 91.
Compared to our own Galaxy, elliptical galaxies
A) have bluer stars. B) show more internal structure. C) have no arms, but a better defined disk. D) have more dust. E) show no evidence of ongoing star formation.
A crate is sliding down an inclined ramp at a constant speed of 0.55 m/s. The vector sum of all the forces acting on this crate must point
A) down the ramp. B) up the ramp. C) vertically downward. D) perpendicular to the ramp. E) None of the above choices is correct.
In a parallel universe, the quantity ? has the value 3.14049… . Express ? in that universe to (a) four significant figures (b) five significant figures
What will be an ideal response?