Separation

How much energy is required to change the separation between the centers of 2 basketballs?
Q. Two 0.59 kg basketballs, each with a radius of 12 cm, are just touching. a) How much energy is required to change the separation between the centers of the basketballs to 1.4 m? (Ignore any other gravitational interactions.) b) How much energy is required to change the separation between the centers of the basketballs to 10 m? (Ignore any other gravitational interactions.) Thank you in advance. This stuff really confuses me.
Asked by Meredith - Fri Apr 2 15:00:44 2010 - - 1 Answers - 0 Comments

A. Enjoying Jerome Long's TT 11:00 Phys 2205 as much as I am, It seems. Use the formula U= -G(m1m2)/r. You're looking for the CHANGE in potential energy, which is the same thing as work. Values to sub in: G = 6.67*10^-11 both masses = .59 r first =.24 (because r is the separation between the centers, and each ball has a radius of .12 m). r1 final = 1.4 r2 final = 10. Run the equation once to find the initial U (potential energy) and save that value. Then run it twice more, once with each of the new radii. Subtract final-initial for a, and final-initial for b.
Answered by VTHokiebjr - Fri Apr 2 18:02:22 2010

How do you get rid of separation anxiety in dogs?
Q. I have a year old border collie mix who has separation anxiety. She barks constantly and is destructive when we aren't home. We are getting complaints from the neighbors. We have used muzzles, vibrating collars, and pharamone treatments to get her to stop and she still isn't. We also have resorted to crating her. Any advice?
Asked by claytonc22 - Tue Sep 12 15:28:09 2006 - - 14 Answers - 0 Comments

A. Crating the dog is a good start. It won't help cure the separation anxiety, but it will prevent the dog from continuing to destory your belongings. A few of the following suggestions can be used alone or in conjunction with each other: 1) Place the dog in the crate while you are at home for short periods of time. Let the dog see that you are still there. However, do not pay any attention to the dog. If the dog barks, ignore it. Don't talk or yell at the dog. After the dog has stopped barking, walk over and without saying a word or showing any affection, let the dog out of the crate. The point of this exercise is to untrain the dog from knowing "I will bark and they will come". 2) If ignoring the dog in the crate doesn't help,… [cont.]
Answered by dasvidas - Tue Sep 12 16:05:47 2006

How severe are the rammifications of an Entry Level Separation from the military?
Q. What can one expect from an entry level separation from the military? Will it effect chances at being hired for a job? Does it go away after a certain amount of time? If it does effect hiring chances, what kind of employment would it bar entry from?
Asked by Piper - Mon May 5 20:04:50 2008 - - 2 Answers - 0 Comments

A. It depends on the condition of the separation. If it was of no fault of your own or nothing to do with your conduct, then expect no problems. It would likely be an administrative discharge under Honorable conditions. Are you in that situation? You're not planning to be are you?
Answered by AngryPatriot - Mon May 5 20:09:22 2008