the speed of light is1.86 times 10^5 miles per second. using a year of 365 days, how far does light travel in a year?

Multiply that speed by the number of seconds in a year, which is 365x24x3600 = ____

Express the result in scientific notation, _.__x10^_

The answer will be the length of a light=year, in miles.

Compare your answer with
http://www.universetoday.com/39630/light-year-in-miles/

Unless you have been told otherwise I would recommend that you include the units in a conversion such as this. While it might seem pedantic here, it can help a great deal when the units are less familiar.

365 d y^-1 x 24 h d^-1 x 60 min h^-1 x 60 s min^-1 = ___ s y^-1

7.34 x 10^26 atoms of Cu is equivalent to how many moles of Cu? (Express to 3 sf)

To calculate the distance light travels in a year, we need to know the speed of light in miles per second and how many seconds are in a year.

Given that the speed of light is 1.86 times 10^5 miles per second, we need to convert this speed to miles per year.

First, let's determine how many seconds are in a year.

There are 60 seconds in a minute, 60 minutes in an hour, and 24 hours in a day. Therefore, there are 60 x 60 x 24 = 86,400 seconds in a day.

Since there are 365 days in a year, we multiply the number of seconds in a day by 365: 86,400 x 365 = 31,536,000 seconds in a year.

Now that we know how many seconds are in a year, let's calculate the distance light travels in miles per year.

Multiply the speed of light (1.86 x 10^5 miles per second) by the number of seconds in a year (31,536,000 seconds).

Distance = 1.86 x 10^5 miles/second x 31,536,000 seconds/year

To multiply numbers in scientific notation, multiply the decimal parts and add the exponents.

Distance = 1.86 x 31,536,000 x 10^5 miles

Calculating the decimal part gives us:

Distance = 58,369,760,000 miles

Therefore, light travels approximately 58,369,760,000 miles in a year.