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Two parallel wires are separated by 6.20 cm, each carrying 2.5 A of current in same direction. What is the magnitude of the force per unit length between the wires?
A hundred turn of insulated copper wire are wrapped around an iron cylinder of cross-sectional area 1.0x10^-3 m^2 and are connected to a resistor. The total resistance in the circuit is 10 ?. If the longitudinal magnetic field in the iron changes fro..
q1. mercedes an astrononaut on the moon holds a 2.5 kg bowling ball over her head 3.2 m above the surface of the moon
A 1500-kW heat engine operates at 25 percent efficiency. The heat energy expelled at the low temperature is absorbed by a stream of water that enters the cooling coils at 20 degrees C. If 60 L flows across the coils per second, determine the incre..
A student throws a 100g snowball at 7.5m/s at the side of the schoolhouse, where it hits and sticks. What is the magnitude of the average force on the wall
What is the minimum uncertainty in position, in nm, of an electron whose velocity is known to be between 2.30×105m/s
a crowbar is used to lift a weight. If a down ward force of 224 N is applied to the end of the bar, how much weight does the other end bear
Starting from rest, a disk rotates about its central axis with constant angular acceleration. In 10 s, it rotates 2 revolutions. What was the angular acceleration during this time
A solid disk with m=60.0kg and a diameter of 48.0cm is to be turned from rest through 12.0 revolutions in 6.00s. Calculate the torque required to accomplish this
what is the magnitude of the electric field strength E such that an electron, What elecric field strength E is required if the electron is replaced by a proton
Electrons emitted by the photoelectric effect are accelerated and then strike a phosphorescent screen, causing it to glow more brightly than the original scene.
Three polarizing plates whose planes are parallel are centered on a common axis. The directions of the transmission axes relative to the common vertical direction, Calculate the transmitted intensity
a piece of angle iron is hinged at point a. determine the resultant torque at a due to the two acting forces. replace
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