The pressure reading increases.
Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit vicinity over which that pressure is distributed. Gauge stress (also spelled gage pressure)[a] is the stress relative to the ambient pressure.
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Answer: The correct answers are A and B.
Explanation:
Conduction: In the conduction, the heat is
transferred from the hotter body to the colder
body until the temperature on both bodies are
equal.
In thermal equilibrium, there is no heat
transfer as the heat is transferred till the
temperature on the bodies are not same.
In the given problem, an iron bar at 200°C is
placed in thermal contact with an identical iron
bar at 120°C in an isolated system. After 30
minutes, the thermal equilibrium is attained.
Then, the temperature on both iron bars are
equal.Both iron bars are at 160°C in an isolated
system.
But in an open system, the temperatures of the
iron bars after 30 minutes would be less than
160°C. There will be heat lost to the
surrounding. The room temperature is 25°C.
There will be exchange of the heat occur
between the iron bars and the surrounding. But
It would take more than 30 minutes for both iron
bars to reach 160°C because heat would be
transferred less efficiently.
Therefore, the correct options are (A) and (B).
Answer:
<em>Explanation:</em>
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hope this helps
<h2>
<u>
~jimmarion~</u></h2>
Answer:
67.5 atm
Explanation:
To answer this problem we can use <em>Boyle's law</em>, which states that at constant temperature the pressure and volume of a gas can be described as:
P₁V₁=P₂V₂
In this case:
P₁ = 101.3 atm
V₁ = 0.500 L
P₂ = ?
V₂ = 0.750 L
We input the data:
101.3 atm * 0.500 L = P₂ * 0.750 L
And solve for P₂:
P₂ = 67.5 atm