Question

Express the number of seconds in a 24-hour day in scientific notation:

a) 8.64 x 10^4
b) 8.64 x 10^2
c) 8.64 x 10^-2
d) 8.64 x 10^-4

Answer 1

The number of seconds in a 24-hour day is 8.64 x 10^4 in scientific notation.

Step-by-step explanation:

The number of seconds in a 24-hour day can be calculated by multiplying the number of hours in a day (24) by the number of minutes in an hour (60) and then by the number of seconds in a minute (60).

24 hours/day x 60 minutes/hour x 60 seconds/minute = 86,400 seconds/day.

Therefore, the correct answer is a) 8.64 x 10^4 because 86,400 can be expressed in scientific notation as 8.64 x 10^4.