Question

(a) 1.51 light-years to miles (a light-year is an astronomical measure of the distance traveled by light in a year, or 365 days; the speed of light is 3.00 x 10^8 m/s) (b) 30.5yd to centimeters (c) 2.5 x 10^10 cm/s to ft/s

Answer 1

60second=1minute
3600 seconds=1hour
24 hour=1day
365 days=1year

Without canceling units because I'm too lazy to at the moment,
one light year would be 3.00 x 10^8meter/sec x 3600sec x 24 hour x 365days=??
Whatever you get times it by 1.51 because we want 1.51 light year. Let that answer be x
That is the meter in 1.51 light years, but we want miles.
Since 1mile=1609.34m
x/1609.34

Answer 2

9.4608 x 10^15 for the first part.

Answer 3

And I got 8.88 x 10^12 for the full answer.

Answer 4

b) 1 yard=91.44cm so how many cm in 30.5 yards ?
c)1cm/s=0.0328ft/s so how many ft/s in 2.5 x10^10cm/s?
You just multiply them.

Answer 5

b. 2.79 x 10^3

Answer 6

c. 8.20 x 10^8

Answer 7

Looks right.
Doing something right now.
Be back in 10minutes.

Answer 8

Alright.

Answer 9

I need to go do something too. I'll be back. Feel free to help others and such.

Answer 10

You got all correct!

Dont worry about me. :)

Answer 11

Thanks for the help!