80000 Joule is the change in the internal energy of the gas.
<h3>In Thermodynamics, work done by the gas during expansion at constant pressure:</h3>
ΔW = -pdV
ΔW = -pd (V₂ -V₁)
ΔW = - 1.65×10⁵ pa (0.320m³ - 0.110m³)
= - 0.35×10⁵ pa.m³
= - 35000 (N/m³)(m³)
= -35000 Nm
ΔW = -35000 Joule
Therefore, work done by the system = -35000 Joule
<h3>Change in the internal energy of the gas,</h3>
ΔV = ΔQ + ΔW
Given:
ΔQ = 1.15×10⁵ Joule
ΔW = -35000 Joule
ΔU = 1.15×10⁵ Joule - 35000 Joule
= 80000 Joule.
Therefore, the change in the internal energy of the gas= 80000 Joule.
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-- Volume . . . made out of 3 dimensions of length
-- Density . . . made out of mass, and 3 dimensions of length
-- Area . . . made out of 2 dimensions of length
-- Acceleration . . . made out of length and time
<em>Mass</em> is not made out of anything else. It's fundamental. A few other fundamental things are length, time, and electric charge.
Using Fleming’s left hand rule,
The magnetic force on the electron will be west. Example: If it is dropped above the equator in Africa, the electron will head towards North America.
B an open system flow both
<h2>
Impulse = 4.9 kgm/s</h2>
Explanation:
Impulse is given by change of momentum.
Mass of softball = 0.49 kg
Initial velocity of softball = 13 m/s
Initial momentum = 0.49 x 13 = 6.37 kgm/s
Final velocity of softball = 23 m/s
Final momentum = 0.49 x 23 = 11.27 kgm/s
Change of momentum = Final momentum - Initial momentum
Change of momentum = 11.27 - 6.37
Change of momentum = 4.9 kgm/s
Impulse = Change of momentum
Impulse = 4.9 kgm/s
