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Although the evidence is weak, there has been concern in recent years over possible health effects from the magnetic fields generated by transmission lines. A typical high-voltage transmission line is 20 m. off the ground and carries a current of 200
A. Estimate the magnetic field strength on the ground underneath such a line.
A 72.4 man steps off a platform 3.02 above the ground. He keeps his legs straight as he falls, What is the magnitude of the reaction force to the force
When a single high-resistance (long) bulb is connected to a 1.5 volt battery, the current through the battery is about 80 milliampere. If you add another high-resistance (long) bulb in parallel, the battery current of course increases to 160 milliamp..
The engine of an aircraft propeller delivers an amount of power 171hp to the propeller at a rotational velocity of 2360 rev/min the torque= 516 Nm, How much work does the engine do in one revolution
A 376 g oscillator has a speed of 116 cm/s when its displacement is 1.60 cm and 63.0 cm/s when its displacement is 6.70 cm
The property of objects to resist changes in motion is called inertia. If an object has a mass of m = 41.85 kg, how do we quantify the inertia this object
A spring has a spring constant of k = 7.500N/m. If the spring is displaced 0.5500 from its equilibrium position, what is the force that the spring exerts
The second harmonic sinusoidal standing wave in a pipe with both ends open has a wavelength of 2m. The sound speed is 340 m/s. What is the frequency of the second harmonic
q1. an underwater diver sees the sun 56 above parallel.how high is the sun above the horizon to a fisherman in a boat
A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle, What is the mass of the wheel
A ball of mass 0.300 kg that is moving with a speed of 7.2 m/a collides head-on and elastically with another ball initially at rest. Calculate the velocity of the target ball after the collision
A gyroscope with rotational inertia 6.0 10-3 kg·m2 is precessing in a horizontal plane at 0.50 rad/s under the influence of a 0.28 N·m torque caused by a force pointing vertically downward
question1a cylindrical distribution of charge rho alphasprtr where alpha 2 microcm52 extends from 0 cm to 9.6 cm .
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