The gas releases an amount of heat equal to -225 J
Explanation:
The change in internal energy of a diatomic gas is given by:
where
n is the number of moles
R is the gas constant
is the change in temperature
For this gas we have:
n = 0.235 mol
So, the change in internal energy of the gas is
Now we can use the 1st law of thermodynamics to find the heat absorbed/released by the gas:
where
Q is the heat absorbed by the gas
W is the work done by the gas
Here we have:
Solving for Q, we find:
Where the negative sign means the heat has been released by the gas.
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Answer:
Digestive System
Explanation:
Food is broken down by the digestive system to give energy to the cells of the body
Answer:
a) t = 4.16 s
b) x = 141.51 m
Explanation:
Given
v = 21.5 m/s
x0 = 52.0 m
a = 6.0 m/s²
a) Motorcycle
x = v0*t + (a*t²/2)
x = 21.5t + (6*t²/2)
x = 21.5t + 3t² <em>(I)</em>
Car
x = x0 + v0*t
x = 52 + 21.5t <em>(II)</em>
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then we can apply <em>I = II</em>
21.5t + 3t² = 52 + 21.5t
⇒ 3t² = 52
⇒ t = 4.16 s
b) We can use <em>I</em> or <em>II</em>, then
x = 52 + 21.5*(4.16)
⇒ x = 141.51 m