Thursday

December 18, 2014

December 18, 2014

Posted by **cassie** on Thursday, October 11, 2007 at 11:55pm.

a)find dF/dr and explain its meaning. What does te minue sign mean?

b)suppose it is known that the earth attracts an object with a force that decreases at a rate 2N/km when r=20,000km?

- calculus -
**bobpursley**, Friday, October 12, 2007 at 5:40amDo you proof your typing? You should. Part b) makes no sense

Part a) requires some thinking. What is a gradient? What happens when one is going in the negative direction?

I will be happy to critique your thinking on this.

**Answer this Question**

**Related Questions**

Calc - Newton's Law of Gravitation says that the magnitude F of the force ...

Calculus - Okay so I have the following question and I am totally stuck: Newton'...

Math - The universal law of gravitation determines the amount of force exerted ...

Math2 - The universal law of gravitation determines the amount of force exerted ...

Physics, 4 short questions - VERY IMPORTANT FOR AN ESSAY ASSIGNMENT. PLEASE HELP...

Science - A hirozontal force F works on a body of mass m1 and accelerates it by ...

Physics(IMPORTANT) - A small object of mass m= 90 kg slides down a spherical ...

Physics - A mass of 8 kg lies on a horizontal, frictionless floor. A force of 72...

Physics 1 - A mass of 8 kg lies on a horizontal, frictionless floor. A force of ...

physics - A mass of 8 kg lies on a horizontal, frictionless floor. A force of 72...