jacaranda physics (1 Viewer)

[:: ck ::]

ok i was doing this question ... and i was wondering if the answer in the back of the book was wrong :

Calculate the gavitational potential energy of Callisto as it orbits within the Jupoiter's gravitational field

this is 15a) from jacaranda

umm the answer says -6.74 x 10^30

but i keep gettin

-7.42 x 10^30 J

use mass of jupiter 1.9 x 10^27
mass of callisto 1.1 x 10^23

distance 1.88 x 10^9

 

[dandaman]

Yeh i got same answer as u
check that all the units are in SI though

 

[:: ck ::]

alrite cool thx a lot

first flaw ive seen in the highly respected jacaranda physics book