Posted by **becky** on Tuesday, January 2, 2007 at 11:12pm.

hi i have a physics question i dont understand

here is the question

A sample of blood is placed in a centrifuge of radius 15 cm. the mass of the corpuscle is 3.0*10^-16 kg, and the magnitude of the force required to make it settle out of the plasma is 4.0X10^-11 N. At how many revolutions per second should the centrifuge be operated?

thanks

Force= centripetal force

Force= m(radius*angular speed)

r is in meters.

solve for angular speed, it will be in radians/sec. To convert it to rev/sec, divide by 2pi.

## Answer this Question

## Related Questions

- physics - A sample of blood is placed in a centrifuge of radius 20.0 cm. The ...
- Physics - A sample of blood is placed in a centrifuge of radius 20.0 cm. The ...
- Physics - no matter how i work it out, i keep getting the wrong answers. please ...
- Physics - Know matter how i work it out, i keep getting the wrong answers. ...
- algebra - i really your need help,i don't understand the problem. The velocity ...
- Physics - Know matter how i work it out, i keep getting the wrong answers. ...
- algebra - The velocity of a blood corpuscle in a vessel depends on how far the ...
- physics - Human blood contains plasma, platelets, and blood cells. To separate ...
- physics - Here were two tricky questions. Please provide steps. Answers are not ...
- physics - Here were two tricky questions. Please provide steps. Answers are not ...