An ac generator provides emf to a resistive load in a remote factory over a two-cable transmission line. At the factory a step-down transformer reduces the voltage from its (rms) transmission value V t to a much lower value that is safe and convenient for use in the factory. The transmission line resistance is 0.30 Ω/cable, and the power of the generator is 250 kW. If V t = 80 kV, what are (a) the voltage decrease Δ V along the transmission line and (b) the rate P d at which energy is dissipated in the line as thermal energy? If V t = 8.0 kV, what are (c) Δ V and (d) P d ? If V t = 0.80 kV, what are (e) Δ V and (f) P d ?
An ac generator provides emf to a resistive load in a remote factory over a two-cable transmission line. At the factory a step-down transformer reduces the voltage from its (rms) transmission value V t to a much lower value that is safe and convenient for use in the factory. The transmission line resistance is 0.30 Ω/cable, and the power of the generator is 250 kW. If V t = 80 kV, what are (a) the voltage decrease Δ V along the transmission line and (b) the rate P d at which energy is dissipated in the line as thermal energy? If V t = 8.0 kV, what are (c) Δ V and (d) P d ? If V t = 0.80 kV, what are (e) Δ V and (f) P d ?
An ac generator provides emf to a resistive load in a remote factory over a two-cable transmission line. At the factory a step-down transformer reduces the voltage from its (rms) transmission value Vt to a much lower value that is safe and convenient for use in the factory. The transmission line resistance is 0.30 Ω/cable, and the power of the generator is 250 kW. If Vt = 80 kV, what are (a) the voltage decrease ΔV along the transmission line and (b) the rate Pd at which energy is dissipated in the line as thermal energy? If Vt = 8.0 kV, what are (c) ΔV and (d) Pd? If Vt = 0.80 kV, what are (e) ΔV and (f) Pd?
What is the force (in N) on the 2.0 μC charge placed at the center of the square shown below? (Express your answer in vector form.)
5.0 με
4.0 με
2.0 με
+
1.0 m
1.0 m
-40 με
2.0 μC
What is the force (in N) on the 5.4 µC charge shown below? (Express your answer in vector form.) −3.1 µC5.4 µC9.2 µC6.4 µC
An ideal gas in a sealed container starts out at a pressure of 8900 N/m2 and a volume of 5.7 m3. If the gas expands to a volume of 6.3 m3 while the pressure is held constant (still at 8900 N/m2), how much work is done by the gas? Give your answer as the number of Joules.
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