Jul 3

Also, what is the approximate net worth of Sir Evelyn De Rothschild alone?

Rothschilds, trillions. Evelyn, his friends call him Ev, 100 billion. And in reality, even they don’t know, because every moment, the value increases, and if anyone could tell you, they aren’t rich enough.

Jun 17

Two identical objects are placed in a room at 21C. Object 1 has a temperature of 96 C and object 2 has a temperature of 30C.

What is the ratio of the net power emitted by object 1 to that radiated by object 2?

Stephan-Boltzmann’s Law states that the power radiated by an object is proportional to the fourth root of its absolute temperature. So, the net power radiated by an object is proportional to (T^4-Tenvironment^4). where T is its temperature.

Jun 6

I am not able to download images from internet while browsing net on phone if download option is not given.. How can i b able to do so. Is there any software available to download pics on sites?

a ton of images at the best site of all

http://www.ventones.com

free

May 16

Lets say you have $5000 coming in per month, how much is a safe amount to spend on a mortgage, while still saving some for car payments, other loans, insurance, groceries, emergencies, etc? My dad said a 1/4 of your net income is a good idea per month to spend on your home payments…agree? disagree?

Your father is exactly correct! Listen to him! The people on here that recommend, 33% as a mortgage payment are also the ones who have contributed to the mortgage crisis in this country today! 33% of your net income is too much. It doesn’t leave you any buffer. If you are looking for the best home mortgage rates or want to reduce your mortgage loan payments, check out this site

http://Best-Mortgage-Refinancing.com

Here you can get free quotes from all available companies in your area. its the best way to find an affordable payment with a reliable company.

Hope this help,

May 5

What are those net traps you see in the movies in jungles? When people walk on them, the net will just shoot up and they are trapped. What are they called, and if anyone knows, how do you make them?

Please forgive eddie… the atmosphere of his home planet doesn’t support life.

May 3

The last one I saw was, I think for ‘96 where after the taxes gained were figured in, the net loss was 20 billion a year.

Not really sure..
Take into consideration- the level of work that these people do, most of them would not make enough money to require payment of taxes. Quite the contrary, I believe.

If they were filing tax returns on their earnings, they would likely qualify for the Earned Income Credit. This would mean they’d COST the Federal Government money, instead of increasing tax revenues.

Apr 11

I have the lg something by net ten. I want to get the samsung qwerty keyboard phone. Can I just switch sim cards or do I have to change my phone number?

i didn’t know NET10 had sim cards, but if they do, it should work. the identification information (i.e., your phone number and account information) should carry over with the SIM. not sure about your contacts if you have a media card in there.

Apr 9

I’m a trainee teacher and one of the pupils asked about this. I thought that there ought to be a perfect/optimum configuration, depending on the size of the sphere and the number of faces. If there is no limit on the smallness of the faces, then I suppose the perfect net would be a tessellating pattern, such as hexagons? But then how would we get it to curve round rather than go on for ever as a flat surface?

The net would not be a tesellation, or as you said, it would just be flat forever.

If you look up, say, the net of a Dodecahedron then you will see ‘cracks’ in the net which allow it to curve back on itself when folded up into the solid shape.

(Dodecahedron net)

http://mathforum.org/alejandre/workshops/dodecahedron.net.gif

To your pupil’s question: For a better approximation of a sphere than a Dodecahedron or Icosahedron, you would have to start using solids with different shaped faces (because there are, of course, only 5 platonic solids).

Using arbitrarily small triangles, you could get an arbitrarily close approximation of a sphere such as in this picture:

http://www.cgal.org/Manual/3.4/doc_html/cgal_manual/Surface_mesher/sphere-surface.png

Apr 7

The elevator and passengers have a mass of 5500 kg. After a stop at the thirteenth floor, the elevator accelerates upward uniformly at 1.0 m/s^2 until it is rising at 2.0 m/s. What is the magnitude of the net force acting on the elevator as it accelerates?

Draw a free body diagram about the elevator and sum vertical forces

So T - m*g = m*a so T (net force) = m*(g + a) = 5500*(9.8 + 1.0) = 59400N

Mar 28

How would I calculate the net force acting on a 20 kg object if the acceleration is 9.8 m/s^2?

F= ma
F=(20)(9.8)
F= 196 Newtons.
Wow, physics.

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