2.1 x 102
Is the correct solution for this problem
Say you have 60 cubic meters of an ideal gas at a pressure of 200 pascals. You heat the gas until it expands to a volume of 120 cubic meters. How much work does the gas do? All you have to do is plug in the numbers:
The gas does 12,000 joules of work as it expands under constant pressure.
The photon energy is the light frequency times Planck's constant. ... Planck's constant is usually called "h". Its value is about 6.626*10^-34 Joules/ Hz. A Joule is a unit of energy, and a Hertz is a unit of frequency, so when you multiply a frequency by h you get an energy.
Answer:
37.7 Ω
Explanation:
The resistance in each lamp is:
P = IV = V²/R
R = V²/P
R₁ = (110 V)² / (150 W)
R₁ = 80.67 Ω
R₂ = (110 V)² / (200 W)
R₂ = 60.5 Ω
Their combined resistance in parallel is:
1/R = 1/R₁ + 1/R₂
1/R = 1/(80.67 Ω) + 1/(60.5 Ω)
R = 34.57 Ω
So the current that goes through them is:
V = IR
I = V/R
I = (110 V) / (34.57 Ω)
I = 3.182 A
We need the same current in the new circuit.
V = IR
230 V = (3.182 A) (R₃ + 34.57 Ω)
R₃ = 37.7 Ω
We can check our answer by finding the voltage drop across this resistor:
V = I R₃
V = (3.182 A) (37.7 Ω)
V = 120 V
230 V − 120 V = 110 V, the correct voltage for the lamps.
1 yard^2 = 0.8361m^2.?
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<span>So he spent (.625 x 400) = $250.00 per m^2. </span>
<span>He paid out (500 x 250) = $125,000 on the deal. </span>
<span>He received (500 / 0.8361) = 598.014592 yard^2 of fabric. </span>
<span>That would have cost (598.014592 x 120) = $71,761.75 locally. </span>
<span>He lost (125,000 - 71,761.75) = $53,238.25 on the deal. </span>
You can rework with the incorrect conversion factor.
