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Why does a bullet makes a hole when it is fired at a glass?
Glass is usually made shatter proof in order too prevent long sharp pieces of glass injuring people. This is done by either applying a clear sheet of plastic too the glass, or the glass sheet is heated till just below the softening point and then cold air is blasted onto the glass, this way when the glass breaks into small chunks which would explain why in some cases the bullet only punctured a hole instead of shattering the whole sheet of glass.
How did you explain conservation of momentum when a rocket ship takes off?
Momentum P of a body with mass m and velocity v is given by:P = m∙vNewton's first law of motion establishes conservation of momentum on abody as long as there is no net force applied on it.Let's assume our Rocket Ship is about to be launched from the surface ofa planet with no gravity force, so we can leave out the influence of thisforce from the discussion.At time t ≤ 0 from launch, the Rocket Ship's velocity v is zero, and soits momentum P is also zero.When the Rocket Ship starts his motion upwards, the initial system (theRocket Ship), is now conformed by two subsystems: The Rocket Ship goingup and the exhaust gases being sent down.To give a simple view of what happens, lets assume that the massof the exhaust gases is expelled at a constant velocity vg through the wholeprocess till the Rocket Ship's engine stops. Then the final condition ofmomentum would be:P = mR∙vR + mg∙vg = 0where mR and mg are the final Rocket Ship's mass and the total mass ofexhaust gases expelled respectively, and vR the Rocket Ship's final velocity.You have to realize that the vectors of velocity VR and Vg will have oppositesigns.If we now would want to include the planets gravity force, this willbe affecting the momentum of the Rocket Ship by producing an accelerationin the opposite direction of its velocity. If we now think of the originalsituation of Rocket Ship and planet at rest, when the Rocket Ship ispushing away from the planet the gravitational attraction between theRocket Ship and planet works both ways. And so the lose of momentumby the Rocket Ship because of the gravitational force is compensated bythe planets lose of momentum in the opposite direction !.
Where can you get thermal till rolls for a good price?
One may look at sites to purchase thermal till rolls at a good price. Sites like Till Roll Direct, Amazon, Till Food and Price Gunland are just a few sites.One may even ask where one purchased the machine.
What is Heisenberg's uncertanity principle?
Heisenberg's uncertainty principle concerns electron momentum and position.It states that for any moving particle, its position and its momentum cannot be determined at a same time.Mathematically, the product (dx)(dp) is greater than or equal to h/4(pi)dx = uncertainty in positiondp = uncertainty in momentumh = Planck's constant (6.620 x 10-34 J.s)
How can pressure affect speed?
If there is enough built up pressure it can make either a large explosion, which is usually what happens, or a bounce of kinetic energy. If this occurs it will make whatever your trying to speed up go smoothly and straight. Till it either loses its energy or hits something that can stop it.
How long till a carrot loses its nutrients?
until you eat it
How long can a wasp live trapped in your house?
It can live as long as you don't kill it or it stings you over and over till it loses it's stinger. A wasp can sting you mulitable times.
Who is stronger now till when Gaara loses his jinchuuriki rock lee or Gaara?
Rock lee
How long will Zia live?
till its dead till its dead till its dead
How long till you get an answer for your?
i no
How long till you can get your drivers license?
u have to wait till ur 16
When was Long Days Ride 'Till Tomorrow created?
Long Days Ride 'Till Tomorrow was created in 1990-06.
How long till you have one billion?
Like 7 long.
How long do people stay in love?
Till they get married and sometimes stay together till they die.
How long do the cardinals practice?
Till they get it "rite".
How long is a lifetime?
From Birth till death
How long will a collie live for?
Till they die
