1. Calcuate the distance(km) from the Earth to the Moon if it takes light 1.3 seconds to make the trip?

2. Saturn is about 1.2 billionkm from Earth. How long does it take light to travel that distance?

(I was only given the wave equation, Max Plancks equation, De Broglies equation, Wilhelm Wiens law equation, and einsteins photoeletric effect equation but none of them have to do with time and distance so I'm not sure how to solve these.)

1 answer

c = velocity of light = 3*10^8 m/s approx

d = c t = 3*10^8 * 1.3 = 3.9 * 10^8 meters
= 3.9 * 10^5 km

I guess you can do the second one now :)