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White raven [17]
2 years ago
6

Can someone tell me how to do half life or something because I am so confused and it is due in a couple of hours

Physics
2 answers:
9966 [12]2 years ago
7 0
I hope the formula helps

Genrish500 [490]2 years ago
6 0
Do you have the equation for half life
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If a car's speed triples, how does the momentum and kinetic energy of the
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Answer: When the car speed triples, momentum also triples but Kinetic energy increases 9 times or by 9 fold.

Explanation:

The momentum of a car (an object) is

p= mv

where

m is =the mass of the object( in this case car)

v is its= velocity

While the kinetic energy is is given by the formulae

K=1/2mv²

To determine how momentum and kinetic energy of the  car changes when the speed of the object triples, We have that the new velocity,

v¹= 3v

So that  the momentum  change becomes

p¹=mv¹=m (3v)= 3mv

mv=p

therefore p¹= 3p

we can see that the momentum also triples.

And the kinetic energy change  becomes

K¹=1/2m(v¹)²= 1/2m (3v)²

= 1/2m9v²= 1/2 x m x 9 x v²=9 x1/2mv²

1/2mv²=K

K¹= Kinetic energy = 9k

but Kinetic energy increases 9 times

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3 years ago
How much time does it take a rhino running at 40 m/s to run 250 m?​
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Explanation:

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Do you think a baseball curves better at the top of a high mountain or down on a flat plain
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A baseball will curve better on the flat plain if it is higher than sea level but low elevation.  

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What is the relationship between temperature and altitude in the stratosphere? (2 points).
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3 years ago
Differentiate between atmospheric pressure and pressure.​
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