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A high-voltage transmission line with a resistance of 0.255 ?/km carries a current of 1.40 kA. The line is at a potential of 600 kV at the power station and carries the current to a city located 157 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 projectile is fired with an initial speed of 65.2 m at an angle of 34.5? above the horizontal on a long flat firing range. find The maximum height reached by the projectile
if an inductor has a change of current 0.418 A to 0.948 and has an inductance of 1.324, what is the change in energy that the inductor is storing
A telescope can be used as a camera if the film is placed at the image position of the objective lens (or mirror); what is the angular separation of the two stars
A kid fires water horizontally from a squirt gun held 1.6 above the ground. It hits other kid 2.4 away squares in the back, at a point 0.85 above the ground. What was the initial speed of the water.
The helicopter in the drawing is moving horizontally to the right at a constant velocity. The weight of the helicopter is W=59600 N. What is the magnitude of the lift force
A spherical cavity is excised from the inside of the sphere. The cavity has radius a4and is centered at position h, Find the electric field inside the cavity
Explain how many penguins of mass 27 kg each can stand on the ice block before they get their feet wet?
a 250-kg motorcycle goes around an unbanked turn of radius 13.7m at a steady 96.5 km/h. What is the magnitude of the net force on the motorcycle?
A five kilogram block and a four kilogram block are placed at either end of a compressed spring. what is the velocity of the other block
Sometimes mirages are formed when light reflects from of a warm layer of air near a hot surface (like a road). what is the index of refraction of the hot air
You want to create an electric field at location. where would you place an electron to produce this filed at the origin
A hot wheels track has a spring loaded launcher. A 100g car is pushed into the launcher, which compresses the spring by 2cm. The cars initial velocity after launching is 3m/s.
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