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musickatia [10]

3 years ago

7

A 3-liter container has a pressure of 4 atmospheres. The container is sent underground, with resulting compression into 2 L. App

lying Boyle's Law, what will the new pressure be? choices: 2.3 atm 8 atm 6 atm 1.5 atm

1 answer:

monitta3 years ago

4 0

Answer:

6 atm

Explanation:

PV = PV

(4 atm) (3 L) = P (2 L)

P = 6 atm

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Dr. james van allen and his group of united states scientists discovered a set of ___________. magnetic equators planets magneti

Fofino [41]

RADIATION BELTS....... I think but it should be radiation belt

3 0

3 years ago

Read 2 more answers

determine the force of gravitational attraction between a 78kg boy sitting 2 meters away from a 65kg girl.

bixtya [17]

Answer:

$F=8.45\times 10^{-8}\ N$

Explanation:

Given that,

Mass of a boy is 78 kg

Mass of a girl is 65 kg

We need to find the force of gravitational attraction between them if they are 2 m away.

The formula for the gravitational force is given by :

$F=\dfrac{Gm_1m_2}{r^2}\\\\F=\dfrac{6.67\times 10^{-11}\times 78\times 65}{(2)^2}\\\\=8.45\times 10^{-8}\ N$

So, the force between them is $8.45\times 10^{-8}\ N$ .

8 0

2 years ago

Calculate the momentum of a 1200kg car with a velocity of 25m/s

timurjin [86]

Momentum = mass x velocity
= (1200)(25)
Momentum = 30,000 kg m/sec

hope this helps :)

4 0

3 years ago

Read 2 more answers

What are the units for the spring constant, k?

Mnenie [13.5K]

C. newtons/meter

Explanation:

The unit of spring constant K is newtons/meter.

The spring constant is also known as the stiffness.

F = k e

F is the force

k is the spring constant

e is the extension.

The unit of F is newtons

e is meters

Therefore, k becomes newtons/meter

Stiffness is the resistance to stretch of a body.

learn more:

Force brainly.com/question/3820012

#learnwithBrainly

4 0

3 years ago

Your friend says, “chemical changes are caused by an input in energy. In physical changes, there is no transfer of energy” is yo

nalin [4]

Answer:

Ok, let's suppose the simplest of the physical changes:

We have an object that is not moving (so it is not accelerated)

and there is change, now the object moves.

Because there was a change, means that there was an acceleration, and by the second Newton's law.

Force equals mass times acceleration:

F = m*a

There must be a force.

So suppose that you pushed the object, then some energy that you had, you transferred it to the object, that now is moving and now has kinetic energy.

Now, is kinda true that in a closed system the total energy is always constant, but it depends on what is our system.

So if we think in our system as you and the object, then in the whole system the energy does not change because the energy that you lost is now on the object, but again, there was a transfer of energy.

So no, your friend is not correct.

3 0

3 years ago