SOLUTION: w=Cr^-2 a. Solve the equation for r. b. Suppose that an object is 100 pounds when it is at sea level. Find the value of C that makes the equation true. (Sea level is 3,963

Algebra ->  Rational-functions -> SOLUTION: w=Cr^-2 a. Solve the equation for r. b. Suppose that an object is 100 pounds when it is at sea level. Find the value of C that makes the equation true. (Sea level is 3,963       Log On


   



Question 317212: w=Cr^-2
a. Solve the equation for r.
b. Suppose that an object is 100 pounds when it is at sea level. Find the value of C that makes the equation true. (Sea level is 3,963 miles from the center of the Earth.)

100=3963r^-2
I am not sure if I am setting this problem up correctly? Can you let me know and give me some guidance as to what step to take first in solving?

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
a)w=C%2Fr%5E2
r%5E2w=C
r%5E2=C%2Fw
r=sqrt%28C%2Fw%29
.
.
.
b)r=3963
w=100
.
.
Find C.
C=wr%5E2
Plug in the values to find C.