Question

the mass of earth is 5.97*10^24 kilograms the mass of the moon is 7.34 *^22 kilograms what is the combines mass of earth ad the moon. express your answer in scientific notation

Answer 1

Hey, on all of these get them times the same power of ten

597 * 10^22
and
7.34 * 10^22
Now you just compare 597 to 7.34

Answer 2

597 + 7.34 = 604.34
but still times 10^22
so
6.0434 * 10^24

Answer 3

thank you !

Answer 4

You are welcome
get the same power of ten
do problem - then get answer as some number between 1 and 10 times 10^something

Answer 5

i got 1.5 *10^5 the first time i just tried it and the second time i did it a different way and got 3.75 *10^6

Answer 6

but then i did it again and got a different answer after checking it i think its correct

Answer 7

Huh, I got 6.0434 * 10^24
Are you doing another problem?

Answer 8

oh its because at my school they taught us a complicated way to solve it and its really confusing but i did get 6.04 * 10^23 so i was off by one

Answer 9

the part im stuck at is part B to the question: how many times greater is the mass of earth than the mass of the moon, express your answer in scientific notation

Answer 10

Hey remember our first step up above?
=============================================
Hey, on all of these get them times the same power of ten

597 * 10^22
and
7.34 * 10^22
Now you just compare 597 to 7.34
============================
so
earth/moon = (597 / 7.34) * (10^22/10^22) which is 597 / 7.34
that is
81.3
BUT IT SAYS express in SI notation so
8.13 * 10^1

Answer 11

oh yeah i should of thought of that then i understand it better now though, i will try your way more