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Homework Statement
1.
A gas expands as shown in the graph. If the heat taken in during this process is 1.02 × 10^6 J, the change in internal energy of the gas (in J) is
2.
One mole of an ideal gas is held at a constant pressure of 1 atm. Find the change in volume if the temperature changes by 50°C.
3.
Two harmonic waves traveling in opposite directions interfere to produce a standing wave described by y = 2 sin (π x) cos (3π t) where x is in m and t is in s. What is the distance (in m) between two adjacent antinodes?
Homework Equations
pV=nRT
W= p(V2V1)
E= Q+W
The Attempt at a Solution
1.
E=Q+W
E=1.02*10^6+[p(V2V1)]
E=1.02*10^6(62)(82)
It seems incorrect
2.
pV=nRT
1*V=1*8.31*(50)
V=416 m^3
3.
k=2pi/λ
pi=2pi/λ
λ=2
pi=[3pi]/λ
λ=3
the distance is 32=1
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