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A high-voltage transmission line with a resistance of 0.325 /km carries a current of 1.30 kA. The line is at a potential of 750 kV at the power station and carries the current to a city located 149 km from the power station. What is the power loss due to resistance in the line?
What fraction of the transmitted power does this loss represent?
A 120 gram ball on a 75 centimeter long string is swung in a vertical circle above a point 220 above the floor. Evaluate the tension in the string an instant before it broke
A satellite is in a circular orbit very close to the surface of a spherical planet. The period of the orbit is 1.85 hours. What is density of the planet
A circuit contains two elements, but it is not known if they are L, R or C. The current in this circuit when connected to a 9.30×101 V, What is the power dissipated in the circuit
At time t = 0 a grinding wheel has an angular velocity of 23.0 rad/s. It has a constant angular acceleration of 27.0 rad/s2 until a circuit breaker trips at time t = 1.60 second. Determine the wheel angular acceleration as it slowed down
A cube of side 9.50cm is placed in a uniform field E=7.50×103 N/C with edges parallel to the field lines, What is the net flux through the cube, What is the flux throught the rigt face
A 2.50 cm by 2.50 cm parallel-plate capacitor has a 2.30 mm spacing. The electric field strength inside the capacitor is 6.00×10^4. What is the potential difference across the capacitor
A 50 kg block and a 100kg block are connected by string. the pulley is frictionless and of negligible mass. the coefficient of kinetic friction between the 50kg block and incline is 0.250. find the change in the kinetic energy of the 50kg block as..
On Mars, where air resistance is negligible, an astronaut drops a rock from a cliff and notes that the rock falls about d meters during the first t seconds of its fall. Assuming the rock does not hit the ground first, how far will it fall during t..
an air-track glider attached to a spring oscillates between the 10 cm mark and the 60 cm mark on the track. the glider
two formula one racing cars are negotiating a circular turn and they have the same centripetal accelaration. however
An electromagnetic wave in vacuum has an electric field amplitude of 220 V/m. Calculate the amplitude of the corresponding magnetic field
question1an electron accelerated from rest through a voltage of 400 v enters a region of constant magnetic field. if
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