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ah ok i was tryin something like that, but i didnt realize brackets were necessary. Thankyou!

I had mono while this unit was being taught so I am havin quite a lot of trouble figurin this homework out. Like this question: How many 6 digit numbers greater than 800 000 can be made from the digits 1, 1, 5, 5, 5, 8? I have absolutly no idea so any help would be appriciated! Thanks!

ok i got it to work haha, thanks for the help guys

ive done this like 10 times now and added the brackets...still gettin 3.2x10^7 lol

wait...i see a missing bracket, one sec lol damn didnt make a difference...wut am i doing wrong?

well isn't this anoying.. k i put the cube root of.. ( (5760²)(6.67x10^(-11)(5.98x10^24) ) / 4π²

i guess that would help lol.. A satilite has an orbital period of T = 5760 s. What is the average orbital radius of its orbit?

hmm, in order to find the speed don't you need the radius? like v = 2πr/T ?

Hmm..i keep getting 3.19x10^7 but the answer is 6.95x10^6

I need to find the orbital radius of a satilite, while only knowing its orbital period. i tried.. a = 4π²r/T² Fnet = Fg a = Gm/r² Gm/r² = 4π²r/T² r = cuberoot(T²Gm/4π²) didnt work out..

Ah now i get it! Thanks for actually showing the steps it really helps lol.

I keep getting Ek = 7.44x10^10 but its 2.99x10^9 ?

F = Gmm/r² ?

Mind elaborating on that?

How do you find the Ek of a satilite in orbit with only its mass and acceleration due to gravity? I did something like.. Fc = Fg mv²/r = mg <-- g = the acceleration due to gravity but then i don't have a radius... How do i solve this?