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3 years ago

Plz answer fast the question

Physics

1 answer:

Thepotemich [5.8K]3 years ago

5 0

Explanation:

ray a is incident ray whereas ray b is reflected ray

please mark the brainliest

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The pressure exerted by a gas is 2.0 atm while it has a volume of 350 mL. What would be the volume of this sample of gas at stan

34kurt

Answer:

700 mL or 0.0007 m³

Explanation:

P₁ = Initial pressure = 2 atm

V₁ = Initial volume = 350 mL

P₂ = Final pressure = 1 atm

V₂ = Final volume

Here the temperature remains constant. So, Boyle's law can be applied here.

P₁V₁ = P₂V₂

$\frac{P_1V_1}{P_2}=V_2\\\Rightarrow V_2=\frac{2\times 350}{1}\\\Rightarrow V_2=700\ mL$

So, volume of this sample of gas at standard atmospheric pressure would be 700 mL or 0.0007 m³

7 0

3 years ago

What work is done by a system on its environment when an ideal gas is maintained at a constant pressure of 200 newtons/meter2 du

Crank

Answer:

Work done done by a system on its environment is W=40 Joules

Explanation:

Given:

Ideal gas is maintained at a constant pressure $P=200 \frac{N}{m^{2}}$

Change in Volume $d v= -0.2 m^{3}$

To find:

Work done by a system during an Isobaric Process

Solution:

In a Isobaric Process, constant pressure is maintained, $P=200 \frac{N}{m^{2}}$

According to the formula,

work done $\bold{W=P \times d v}$

Substitute the values of pressure and change in volume in the above formula,

$=200 \times -0.2$

$=40 \text { Joules }$

Result:

Work done done by a system W= -40 Joules

8 0

3 years ago

Read 2 more answers

Select answer about motion and newtons law and explain why it's correct 23POINTS NEED ASAP

zlopas [31]

The train would need the greatest amount of force due to weight! If you think of it, a baseball won't need much force to stop it, but if you have a heavy train, it will need excessive force to stop the train. The answer would be #3

I hope this answer helps!

Sorry if it doesn't make sense, as I don't know that much about physics! I am just thinking of what makes sense.

3 0

4 years ago

A 60kg student is sitting in a chair and is not moving. what is the force of a student acting on the chair? what is the force of

vazorg [7]

The force with which the student is acting in the chair and the force of the chair acting on the student is 588 N

Explanation:

There are two kinds of forces acting on you when you are sitting on the chair, they are the gravitational force and the force exerted by the chair on you.
The forces acting on the chair when you are sitting are the gravitational force and the force exerted by you.
As per Newton's third law of motion, for every action, there is an equal and opposite reaction.
Hence, F = ma

that is, F = 60 * 9.8

=588 N

So, 588 N force should be applied from both sides then only you can sit properly in the chair.

7 0

3 years ago

If a 2 kg ball traveling at 10 m/s hits a wall and stops in 0.03 seconds, then how much force will the ball experience?

hjlf

Newton's second law is:
F=m*a,

where a=dv/dt, so

F=m*(dv/dt)

Rearranging gives:
F*dt=m*dv.

Basic integration gives:
F*t=m(vf-v0),
where vf and v0 are the final and initial velocities of the object respectively.

In your case vf=0, because the ball stops completely, and v0=10m/s.

Rearranging the last expression gives F=(m(vf-vo))/t.

Plug in numbers to find F=(2*10)/0.03=666.6 N

8 0

4 years ago