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Lera25 [3.4K]
3 years ago
6

PLEASE HELP. NOTICE HOW THEY PUT FUTURE

Physics
1 answer:
MrMuchimi3 years ago
6 0

I think its <u>B</u> because it looks like it might indicate a future rain storm.

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During the expansion of a gas in piston-cylinder the relation between the pressure and the volume is given as
Iteru [2.4K]

Answer: The relationship between the pressure and the volume is given as P=K/V or PV= K. (Pressure increases as Volume decreases).

Explanation:

When gas is trapped in an enclosed medium for example a cylinder by a piston. When the piston is pushed in, the gas particles will have less room to move as the VOLUME the gas occupies has been DECREASED. This will automatically lead to frequent collision of the has particles with the wall of the container. The collision exerts forces which leads to INCREASED PRESSURE.

This obeys the Boyle's law which states that the volume occupied by a fixed mass of gas is inversely proportional to the pressure, provided temperature is kept constant. This can be mathematically expressed below:

PV=K, where K is constant

P1 V1=P2 V2

Where,

P1= initial pressure

V1= initial Volume

P2= final pressure

V2= final Volume.

Therefore, increasing pressure from initial pressure to final pressure means that initial volume will change to final volume, providing the temperature remains constant.

8 0
3 years ago
The bullet starts at rest in the gun. An 8.6 g bullet leaves the muzzle of a rifle with a speed of 430.1 m/s. What constant forc
xenn [34]

Answer:

The constant force exerted on the bullet is 1590.87 N.

Explanation:

It is given that,

Mass of the bullet, m = 8.6 g

Initial speed of the bullet, u = 0          

Final speed of the bullet, v = 430.1 m/s

We need to find the force exerted on the bullet while it is traveling down the 0.5 m length of the barrel of the rifle. Let a is the acceleration of the bullet. So,

v^2-u^2=2ad

v^2=2ad

a=\dfrac{v^2}{2d}

a=\dfrac{(430.1)^2}{2\times 0.5}

a=184986.01\ m/s^2

Let F is the force exerted. It is given by :

F=ma

F=8.6\times 10^{-3}\times 184986.01

F = 1590.87 N

So, the constant force exerted on the bullet is 1590.87 N. Hence, this is the required solution.                                                  

3 0
4 years ago
What was the significance of the double-slit experiment? A. It showed that light had wave properties. B. It first demonstrated t
kykrilka [37]
I believe that the answer is <span>A. It showed that light had wave properties.</span>
6 0
3 years ago
What is the motion of the negative electrons and positive atomic nuclei caused by the external field?
telo118 [61]

Answer:

The negative electrons moves to the left While the positively charged current moves in the opposite direction to the right when an external field is applied.

The positive atomic nuclei remains almost motionless.

3 0
3 years ago
Calculate the gravitational potential energy a 1kg ball has when thrown 3 m into the air. The gravitational field strength on ea
Andrei [34K]

Answer:

P.E.=29.4Nm

Explanation:

given data

m=1kg

h=3m

g=9.8m/s²

to find

gravitational potential energy=P.E.=?

solution

P.E.=mgh

PUTTING VALUES

P.E.=1kg×9.8m/s²×3m

P.E.=29.4Nm

3 0
3 years ago
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