Objects with masses of $195kg$ and a $495kg$ are separated by $0\mathrm{.}400m.$

$($a$)$ Find the net gravitational force exerted by these objects on a $49\mathrm{.}0kg$ object placed midway between them. $x$

Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully, $N$

$($b$)$ At what position $($other than infinitely remote ones$)$ can the $49\mathrm{.}0kg$ object be placed so as to experience a net force of zero?

$m$ from the $495kg$ mass

Hint: Active Figure $7\mathrm{.}17$

$10.[0/1$ Points$]$

SERESSEN$17.$P$\mathrm{.}020.{?}^{11}$ N$.$ At how many revolutions per second should the centrifuge be operated?

k

Your response differs from the correct answer by more than $10\%.$ Double check your calculations. rev$/$s