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3 years ago

VISUAL 2 GAS LAWS

Physics

1 answer:

Verdich [7]3 years ago

3 0

Answer:

1) they represent the volume of the system

2) The pressure referred to in Boyle's law is the pressure the gas exerts on the container.

3) pressure is increased

4) temperature

5) the volume in the second cylinder will be half of the volume of the first cylinder

6) pressure

7) the volume of the second cylinder will be three times the volume of the first cylinder.

8)PV/T = k

9)the volume remains constant

Explanation:

Pressure is defined as force per unit area in science. Pressure of a gas as defined in the gas laws refer to the pressure the gas molecules exert on the walls of the container as they frequently collide with it in accordance with the kinetic theory of gases. The kinetic theory of gases states that gas molecules are in constant motion and collide frequently with each other and the walls of the container.

Boyle's law states that the volume of a given mass of gas is inversely proportional to its pressure at constant temperature. Hence when volume decreases, pressure increases accordingly.

Charles law states that, the volume of a given mass of gas is directly proportional to it's temperature (in Kelvin) at constant pressure.

To maintain a constant pressure, volume and temperature must increase concurrently to the same degree. Hence the application of Charles law.

PV/T = k

Hence;

P1V1/T1= P2V2/T2

P1= P

T1= T

V1= 100cm^3

V2= ??

P2= 2P

T2 = 2T

From

P1V1/T1= P2V2/T2

P1V1T2 = P2V2T1

V2 = P1V1T2/ P2T1

V2 = P ×100 ×2T/ 2P × T = 200PT/2PT

V2= 100cm^3

Hence the volume remains constant

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A wheel with moment of inertia 25 kg. m2 and angular velocity 10 rad/s begins to speed up, with angular acceleration 15 rad/sec2

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Answer:

Explanation:

a )

from lens makers formula

$\frac{1}{f} =(\mu-1)(\frac{1}{r_1} -\frac{1}{r_2})$

f is focal length , r₁ is radius of curvature of one face and r₂ is radius of curvature of second face

putting the values

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1 / r₂ = .538

r₂ = 1.86 cm .

= 18.6 mm .

b )

object distance u = 25 cm

focal length of convex lens f = 1.8 cm

image distance v = ?

lens formula

$\frac{1}{v} - \frac{1}{u} = \frac{1}{f}$

$\frac{1}{v} - \frac{1}{-25} = \frac{1}{1.8}$

$\frac{1}{v} = \frac{1}{1.8} -\frac{1}{25}$

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c )

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size of image = .0776 x size of object

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= .776 mm

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