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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 20m above the ground and carries a current of 200A. Estimate the magnetic field strength on the ground underneath such a line.
A small 15{rm g} bug stands at one end of a thin uniform bar that is initially at rest on a smooth horizontal table. The other end of the bar pivots about a nail driven into the table and can rotate freely, without friction.
A spring is mounted from the ceiling. As a mass is attached, the spring stretches 1.04 m. What will be the frequency of the resulting oscillation
A factory worker pushes a 30kg crate a distance of 4.50 meters along a level floor at constant velocity by pushing it downward at an angle of 30degrees below the horizontal. The coefficient of kinetic friction between the crate and the floor is 0...
A jogger runs 100m due east, then changes direction for the second leg of the run. At the end of the run, she is 350m away from the starting point at an angle of 25.0° north of east. What were the direction and length of her second displacement? Util..
What are the two types of errors one encounters in experiments? Give an example of each, What does standard deviation of measured data tell you
Two capacitors are connected to a battery. The battery voltage is V = 50 V, and the capacitances are C1 = 2.00 ?F, Determine the total energy stored by the two capacitors
At the instant the car begins to accelerate, a truck with a constant velocity of 21 m/s passes in the next lane. Explain how far will the car travel before it overtakes the truck?
A very large number (N+1) polaroids are arranged in a sandwich, The transmission axis of each polaroid is at a constant angle, with respect to its predecessor
White light is incident normally on a thin soap film ( = 1.33) suspended in air. What are the two minimum thicknesses that will constructively reflect yellow ( = 577 ) light? Enter your answers in ascending order separated by a comma
Charge Q = 10E-8 C is placed in the origin. Location A is -3.00m from the charge while location B is 2.00m from the charge.A) Find the potential difference VB - VA between the two points. B) Which point is at the higher potential? Type either "Poi..
Assuming that air resistance exerts a 95 N force on the person during the fall, identify the person's velocity just before hitting the net.
A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1330 Hz. What is the speed of the bird
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