Speed Of Light Problem?

Question

Light travels at a speed ofd 299,792 kilometers per second. How long does it take light to get from:
1. New York to Los Angeles, 3900 km?
2. the sun to the earth, 150 million km?
3. earth to pluto at its closest point of approach, 4.44 billion km? (answer in hourse)
4. If it takes light 10.34 hours to cross the Milky Way galaxy, then use that fact to figure the distance across the Milky Way?

Please gimme your answers as clear as possible please...ill giv 10 points to the person who gives me the rite answers..
thanx

Answer 1

1. v = d/t
t = d/v
t = (3 900 km) / (299 792 (kilometers per second)) = 13.0090196 milliseconds

(150 000 000 km) / (299 792 (kilometers per second)) = 8.33911512 minutes

(444 000 000 000 km) / (299 792 (kilometers per second)) = 17.1415144 days = 411.396346 hours


(10.34 hours) * 299 792 (kilometers per second) = 1.11594574 × 10^13 meters

Answer 2

1) 299,792 km/s / 3900 km = 76.87 1/seconds take the inverse (or 1 divided by 76.87) of this to get seconds or = .013 seconds

2) 299792 km/s / 150,000,000 km = .002 1/seconds, again take the inverse to get seconds or = 500 seconds

3) 299792 km/s = 1079251200 km/hour (basically multiply 299792 by 3600 which is 60 seconds per minute times 60 minutes per hour to get the conversion)

1079251200 km/hour / 4.44 billion km = .243 1/hour, again take the inverse to get hours in this case or = 4.11 hours

4) 10.34 hours (basically we'll go backwards now) take the inverse to get .097 1/hours

.097 = 1079251200 km/hour / X (x being the answer you are seeking)

X * .097 = 1079251200 (so just divide the 107... by .097)

X = 11126301030.9 km

(NOTE: all of these answers have been rounded off a bit)

Answer 3

in my opinion tgypoi is on the suitable suited music. As there is not any such factor as a thoroughly inflexible physique, the stick, earlier being decrease, could be compressed interior the section the place earth's gravity continues to be influent (say the 1st 1000km) and so its ordinary length sound be extremely shorter than an identical stick in area. while the stick is decrease all of it will initiate falling (yet not instanteneously) through fact the earth's pull is "felt" with the help of the component of the stick that is interior the earth's gravitational field and this pull is transmitted alongside the stick on the fee of sunshine (relies upon on the fabric that is made up of). which you will think of the stick is longer (through fact the progressively greater distant components fall "after") even with the undeniable fact that that is merely which you do not understand that the distant components have began to fall earlier that advice reaches you! the difficulty here is touching on what occurs here (the place I decrease the stick) and now (the on the spot the stick is decrease) to what occurs there (the different terminal component of the stick) and then. Separated events in area could be judged simultaneous or not with care. As usual one factor is to diploma issues (a million easy twelve months stick), yet another factor is staring at issues (a million easy twelve months stick) and nevertheless yet another is to calculate issues (a million easy twelve months stick)!!

Answer 4

1. 3900 / 299792 = .013009 seconds
2. 150,000,000 / 299792 / 60 = 8 minutes 34 seconds
3. 4440000000 / 299792 / 60 / 60 = 1.64 hours
4. 299792 * 60 * 60 * 10.34 =11,159,457,408 km

Answer 5

i can tell you for a fact it takes light 8 minutes for light from the sun to reach earth. as far as miles per hours go, light travels at approxametely 186,000 miles per second