A solid sphere of mass 0.604 kg rolls without slipping along a horizontal surface with a translational speed of 5.41 m/s. It comes to an incline that makes an angle of 31.0掳 with the horizontal surface.
(a) What is the total energy of the rolling sphere? Neglect energy losses due to friction.
12.4 J
(b) To what vertical height above the horizontal surface does the sphere rise on the incline?
2.09 m
How do they come up with 12.4J for question a, and 2.09m for question b? I am really confused??How does this work??
you need to know the radius of the sphere too.
No radius given? It must cancel out then -
Moment of Inertia of solid uniform sphere of mass m and radius r about an axis through centre = I_sphere = m*r^2*2/5
kinetic energy of sphere due to rotation = I/2*w^2 where w is angular velocity.
sphere is rotating at 5.41/r radians/sec
so r does cancel - sorry.
KE_sphere is 5.41^2*m/5 add this to 1/2*m*v^2 for translational ke of sphere and you get the 12.4 joules
To work out the height you just equate the total k.e. lost to increase in potential energy due to climbing ( sphere is not rotating when it reaches the highest point).
Thursday, June 24, 2010
Is this a safe way to work the neck muscles?
I put a 25lb weight on my head with a towel underneath and rock my head back and forth. Is this safe?
sometimes I'll get a iron type taste in my mouth...like the taste of blood, but little soreness.Is this a safe way to work the neck muscles?
nope, you will wear down cartilage.
Have you ever done shrugs?
hold a barbell at your waist with a comfortable weight, raise your shoulders and come up onto your toes at the same time. Just be careful not to roll your shoulders, it's the equivalent to sliding your face across asphault.
sometimes I'll get a iron type taste in my mouth...like the taste of blood, but little soreness.Is this a safe way to work the neck muscles?
nope, you will wear down cartilage.
Have you ever done shrugs?
hold a barbell at your waist with a comfortable weight, raise your shoulders and come up onto your toes at the same time. Just be careful not to roll your shoulders, it's the equivalent to sliding your face across asphault.
I started a small business and my sister wants to be a partner. How can I protect myself if this doesn't work
out. I want to have a partnership agreement , but I am unsure of what terms to use. I want to have more control over the business then she does,because it was my idea and I put in the intial work to start it. Starting this business has been a dream of mine for years and I don't want to lose it.I started a small business and my sister wants to be a partner. How can I protect myself if this doesn't work
I would keep it as my own. Partnerships with family members rarely work out. Money can become a real problem when you are related. If you need a partner then I would say keep at least 51% control of the business because then you will have controlling interest in the company. This means that you will be the one that makes the final decision. At first give her 25% partnership to see if she is serious about the business and works as hard as you do to see it succeed. If she is doing her part then increase it after 6 months to 49% interest. But I still say unless you need a partner for financial reasons or time management is an issue for you then do it but if not keep it. Another thing you could do is have her work in the company as an employee for six months to see if she would like to do the job every day year in and year out. Then if she does talk partnership with her. You are right to be cautious after all this business is your baby and you want to see it grow.I started a small business and my sister wants to be a partner. How can I protect myself if this doesn't work
The correct answer is anytime a partnership takes on a new partner the old Partnership is legally dissolved but thats only in a legal sense. Change your partnership to a S-Corp and you'll do away with all the B.S. In your By-Laws you spell out each persons responsibilities and ownership rights. Visit the link below and read it and then go to the visiters page. It doesn't cost anything to visit.
If you already have these concerns, perhaps having your sister as a partner is unwise? Could you tell her that you value your relationship with her too much to risk it over a business venture?
Find a good honest attorney experienced in writing up business agreements. Put into the document that you control at least 51 percent or more of the voting power, and that as the founding partner, that you for the *duration* of the partnership retain the physical and intellectual rights to all properties. Also put in that if the partnership does not work out during the first ten years you retain the right to *unilaterally* buy her out for one dollar, after 15 years unilaterally for x dollars, after 30 years unilaterally for 49 percent of the value of the business. I am not a lawyer so these are just some ideas to discuss with your lawyer. The important thing is to retain ownership of everything, keep *your* name exclusively on the ownership papers of all properties (cars, rental agreements, buildings, etc), and have a way of dissolving the partnership if things go badly.
You need to speak to an attorney who specializes in these matters. You would legally set up the partnership, specifying ownership by percentages I believe, including all the what-if's that could happen (business folds, she sells out, you sell out, etc) in a contract.
I like the first answer. You can never be too cautious. And family matters can be terrible when things don't go well.
My wife's family operates a Chinese restaurant, and she says that her sister got involved (it is run by her brothers), and started being rude to customers and such, ruining business. It may be menopause or something, but still. Family can be a very touchy deal to work with.fashion necklace
I would keep it as my own. Partnerships with family members rarely work out. Money can become a real problem when you are related. If you need a partner then I would say keep at least 51% control of the business because then you will have controlling interest in the company. This means that you will be the one that makes the final decision. At first give her 25% partnership to see if she is serious about the business and works as hard as you do to see it succeed. If she is doing her part then increase it after 6 months to 49% interest. But I still say unless you need a partner for financial reasons or time management is an issue for you then do it but if not keep it. Another thing you could do is have her work in the company as an employee for six months to see if she would like to do the job every day year in and year out. Then if she does talk partnership with her. You are right to be cautious after all this business is your baby and you want to see it grow.I started a small business and my sister wants to be a partner. How can I protect myself if this doesn't work
The correct answer is anytime a partnership takes on a new partner the old Partnership is legally dissolved but thats only in a legal sense. Change your partnership to a S-Corp and you'll do away with all the B.S. In your By-Laws you spell out each persons responsibilities and ownership rights. Visit the link below and read it and then go to the visiters page. It doesn't cost anything to visit.
If you already have these concerns, perhaps having your sister as a partner is unwise? Could you tell her that you value your relationship with her too much to risk it over a business venture?
Find a good honest attorney experienced in writing up business agreements. Put into the document that you control at least 51 percent or more of the voting power, and that as the founding partner, that you for the *duration* of the partnership retain the physical and intellectual rights to all properties. Also put in that if the partnership does not work out during the first ten years you retain the right to *unilaterally* buy her out for one dollar, after 15 years unilaterally for x dollars, after 30 years unilaterally for 49 percent of the value of the business. I am not a lawyer so these are just some ideas to discuss with your lawyer. The important thing is to retain ownership of everything, keep *your* name exclusively on the ownership papers of all properties (cars, rental agreements, buildings, etc), and have a way of dissolving the partnership if things go badly.
You need to speak to an attorney who specializes in these matters. You would legally set up the partnership, specifying ownership by percentages I believe, including all the what-if's that could happen (business folds, she sells out, you sell out, etc) in a contract.
I like the first answer. You can never be too cautious. And family matters can be terrible when things don't go well.
My wife's family operates a Chinese restaurant, and she says that her sister got involved (it is run by her brothers), and started being rude to customers and such, ruining business. It may be menopause or something, but still. Family can be a very touchy deal to work with.
Simplify and write this expression using positive exponents only? Any suggestions on working this one? ?
(9x^-6y^4)^1/2Simplify and write this expression using positive exponents only? Any suggestions on working this one? ?
3x^-3y^2 = 3y^2/ x^3
3x^-3y^2 = 3y^2/ x^3
How's This Work Schedule Sound?
I'm 20 and running a web design business along with a entertainment news website. I'm wanting to become one of the best and to do this I have to discipline myself and work hard.
How does working 7 days a week and taking 1 day off out of those 7 sound? I would also work anywhere from 8-12 hours a day.How's This Work Schedule Sound?
How can you work 7 days a week and take one day off? That means you would work six days a week!!!!!!!!!!How's This Work Schedule Sound?
great
If you are dedicated, you may find yourself working more than that........I am an engineer for a large corporation and have to force myself to go home sometimes because I am so into my work.......Hard work pays off................Take care,dear and may success be yours!!!!!!!!!
Get a life, a real life. Working all the time won't get a real life.
How does working 7 days a week and taking 1 day off out of those 7 sound? I would also work anywhere from 8-12 hours a day.How's This Work Schedule Sound?
How can you work 7 days a week and take one day off? That means you would work six days a week!!!!!!!!!!How's This Work Schedule Sound?
great
If you are dedicated, you may find yourself working more than that........I am an engineer for a large corporation and have to force myself to go home sometimes because I am so into my work.......Hard work pays off................Take care,dear and may success be yours!!!!!!!!!
Get a life, a real life. Working all the time won't get a real life.
I bought a bag of tobacco,too fresh for me can I dry it out in the microwave?Would this work or burn it?
no, don't put it in the microwave.
I have fresh tobacco which we wrapped in newspaper and let set for a week and it was good.
To speed it up get cotton filters usually used for furnaces (make sure that you don't get fiberglass ones) and place the tobacco between two filters and place them on top of a box fan, turn it on and they will be dry in a day.I bought a bag of tobacco,too fresh for me can I dry it out in the microwave?Would this work or burn it?
Throw it to the garbage. It belongs there.I bought a bag of tobacco,too fresh for me can I dry it out in the microwave?Would this work or burn it?
it would depend on how log you put it in for
I have fresh tobacco which we wrapped in newspaper and let set for a week and it was good.
To speed it up get cotton filters usually used for furnaces (make sure that you don't get fiberglass ones) and place the tobacco between two filters and place them on top of a box fan, turn it on and they will be dry in a day.I bought a bag of tobacco,too fresh for me can I dry it out in the microwave?Would this work or burn it?
Throw it to the garbage. It belongs there.I bought a bag of tobacco,too fresh for me can I dry it out in the microwave?Would this work or burn it?
it would depend on how log you put it in for
Curly hair, but i want bangs. how can i make this work?
i really want to do something different with my hair. i really like how super long, full, straight across bangs look. but the thing is my hair is SUPER curly (small springy ringlets) so im not sure how that would look unless i straighten the bangs everyday. what do you think? will it look right if i leave the bangs curly too?Curly hair, but i want bangs. how can i make this work?
Check out http://www.naturallycurly.com/curlpix to get some style ideas, then visit http://www.naturallycurly.com/curlsalons to find a curl stylist expert in your area. It's important to see someone who really knows how to work with curly hair. Most stylists don't get any training with curly hair in beauty school.Curly hair, but i want bangs. how can i make this work?
i dont know how great it would look if u left them curly but u should definetly try. i think the best thing would be to straighten them. hope i helped (:
Check out http://www.naturallycurly.com/curlpix to get some style ideas, then visit http://www.naturallycurly.com/curlsalons to find a curl stylist expert in your area. It's important to see someone who really knows how to work with curly hair. Most stylists don't get any training with curly hair in beauty school.Curly hair, but i want bangs. how can i make this work?
i dont know how great it would look if u left them curly but u should definetly try. i think the best thing would be to straighten them. hope i helped (:
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