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sdas [7]
3 years ago
12

An adiabatic expansion refers to the fact that:

Physics
1 answer:
Vladimir [108]3 years ago
8 0

The fact that no heat is transferred between a system and its surroundings refers to an adiabatic free expansion.

 

In gas, the adiabatic compression creates an increase in the temperature while it causes a drop in temperature there is adiabatic expansion against pressure, or a spring.

<span>

Before being allowed to expand in vacuum, the gas is first contained in an insulated container.</span>

 

The work made by or on the system is zero since there is no external pressure for the gas to enlarge on against. The first law of thermodynamics then insinuates that zero is the net internal energy change of the system since the process does not incorporate any work or heat transfer.

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3 years ago
A typical meteor that hits the earth's upper atmosphere has a mass of only 2.5 g, about the same as a penny, but it is moving at
attashe74 [19]

Answer:

Answer:u=66.67 m/s

Explanation:

Given

mass of meteor m=2.5 gm\approx 2.5\times 10^{-3} kg

velocity of meteor v=40km/s \approx 40000 m/s

Kinetic Energy of Meteor

K.E.=\frac{mv^2}{2}

K.E.=\frac{2.5\times 10^{-3}\times (4000)^2}{2}

K.E.=2\times 10^6 J

Kinetic Energy of Car

=\frac{1}{2}\times Mu^2

=\frac{1}{2}\times 900\times u^2

\frac{1}{2}\times 900\times u^2=2\times 10^6  

900\times u^2=4\times 10^6

u^2=\frac{4}{9}\times 10^4

u=\frac{2}{3}\times 10^2

u=66.67 m/s

8 0
3 years ago
The center of a long frictionless rod is pivoted at the origin and the rod is forced to rotate at a constant angular velocity Q
Doss [256]

Answer:

The answers can be found attached.

7 0
3 years ago
Potential energy becomes kinetic energy when:
Sedbober [7]

Answer:

An object has potential energy (stored energy) when it is not in motion. Once a force has been applied or it begins to move the potential energy changes to kinetic energy (energy of motion).

EXAMPLE: A rock sitting on the edge of a cliff. If the rock falls, the potential energy will be converted to kinetic energy, as the rock will be moving. A stretched elastic string in a longbow.

5 0
2 years ago
Which best describes the transition from gas to liquid? (2 points) Select one: a. Energy must be removed because particles in li
Alenkinab [10]

Which best describes the transition from gas to liquid?

gas is @ higher energy state than liq. so the transition must remove energy. so ans is  a. Energy must be removed because particles in liquid move more slowly.

8 0
3 years ago
Read 2 more answers
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