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power lines have a limit on the maximum size of the electric fieldthey produce. in most states, a maximum of 5kN/C at about 20 m fromthe wires is allowed. This is quite large compared to the Earth'sfair-weather electric field of about 100 N/C. Assume that thecharge on the wire is static (not true, but a simplifcation here)and use the formula for the electric field for a wire : E=(2kλ)/(r) to determine how much charge per unit length is onthe wire.
a fixed system of charges exerts a force of magnitude 16 n on a 8 c charge. the 8 c charge is replaced with a 9 c
At a steady state, a well-insulated compressor takes in air at 60 degrees Fahrenheit, 14.2 lbf/in^2, Determine the compressor power
what is the kinetic energy of the system. assume the roller coaster in Fig. 6-41 (h1 = 36 m, h2 = 14 m, h3 = 25) passes point 1 with a speed of 2.00 m/s. If the average force of friction is equal to one sixth of its weight, with what speed will it ..
Two point charges are placed on the y axis as follows: charge q1= -1.50 nC at y= -.600m, What is the net force (magnitude and DIRECTION) exerted by these two charges on a third charge
A non-ideal battery has an EMF of 24.0V when no current is drawn and a terminal voltage of 22V when a 10.0? resistors is put in series with the battery. What is the internal resistance of the battery?
Calculate the position that a lens should be placed in order to achieve the maximum magnification. what is the maximal magnification possible
The potential difference between two parallel conducting plates in vacuum is 475 V. An alpha particle with mass of 6.50×10-27 kg and charge of 3.20×10-19 C is released from rest near the positive plate. What is the kinetic energy of the alpha particl..
a concrete wall of a cold storage room measures 3.0 m high 5.0 m wide and 20 cm thick. the room temperature is
You are driving along a highway at 25.5 m/s when you hear a siren. You look in the rear-view mirror and see a police car approaching you from behind with a constant speed, How fast was the police car moving
An inductor (L = 400 mH), a capacitor (C = 4.43 µF), and a resistor (R = 500 ?) are connected in series. Determine the phase angle by which the current leads or lags the applied voltage
If the accelerating plates are 1.00cm apart, and have a potential difference of 2.55×104V , what is the magnitude of the uniform electric field between them
A positive object touches a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaves? Answer They move closer together. They are unaffected. They separat..
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