A ly (light year) is the distance that light travels in one year. The speed of light is 3.00 × 108 m/s. How many miles are there in a ly? (1 mi = 1609 m and 1 yr = 365.25 days)
A) 9.46 × 1012 mi
B) 9.46 × 1015 mi
C) 5.88 × 1012 mi
D) 5.88 × 1015 mi
E) 2.87 × 1013 mi
C
You might also like to view...
An index of refraction less than one for a medium would imply
A) that the speed of light in the medium is the same as the speed of light in vacuum. B) that the speed of light in the medium is greater than the speed of light in vacuum. C) that the speed of light in the medium is less than the speed of light in vacuum. D) refraction is not possible. E) reflection is not possible.
In a LRC circuit, a second capacitor is connected in parallel with the capacitor previously in the circuit. What is the effect of this change on the impedance of the circuit?
A) It increases. B) It decreases. C) It does not change. D) It increases for frequencies below resonance and decreases for frequencies above resonance. E) It decreases for frequencies below resonance and increases for frequencies above resonance.
How far must one travel to escape Earth's gravitational field?
A) to a region above Earth's atmosphere B) to a region well beyond the Moon C) to a region beyond the solar system D) forget it; you can't travel far enough.
An object 2.0 cm tall is placed 24 cm in front of a convex mirror having a focal length of magnitude 30 cm
(a) Where is the image formed and how far is it from the mirror? (b) How tall is the image? What will be an ideal response?