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Two insulated wires, each 2.90 m long,are taped together to form a two-wire unit that is 2.90 m long. One wire carries a current of 7.00 A;the other carries a smaller current I in the oppositedirection. The two wire unit is placed at angle of 51.0° relative toa magnetic field whose magnitude is 0.360 T. The magnitude of the net magnetic force experienced by the two-wire unit is 3.13 N. Whatis the current I?
Approximately which fringe number has a peak intesnity that is 1/2 percent of the central fringe intensity
Two electrons in the same atom both have n = 9 and = 3. (Keep in mind that the electrons are indistinguishable) How many different states are possible? How many different states would be possible if the exclusion principle were inoperative?
Jill ( 60kg) is swinging on a rope swing that is 4m long, at what frequency does Jill need to pump her legs to get the swing going higher
question a 25g bullet pierces a sand bag 27cm thick. if the initial bullet velocity was 64 ms and it emerged from the
Each cable has a length of l = 2.90 m. Illustrate what is the tension T in each of the cables? Use 9.80 m/s2 for the magnitude of theacceleration due to gravity.
a long rigid conductor lying along an x axis carries a current of i in the negative x direction. a magnetic field is
A subway train has three cars, each weighing 1.20 x 105 N. The frictional force on each car is 103 N, and the first car, acting as an engine, What is the tension between the second and third cars
What is the speed of an electron with a de Broglie wavelength of 0.140nm and 0.140nm
In the reference frame of the laboratory, a particle moves in the x-y plane with a velocity of 0.7c at an angle of 40 degrees with the x-axis. Find the velocity (magnitude and direction) of this particle
A fireman clings to a vertical ladder and directs the nozzle of a hose horizontally toward a burning building. The rate of water flow is 6.28 kg/s, and the nozzle speed is 13.0 m/s. The fireman holds the nozzle 1.42 m vertically above his boots on..
A small mailbag is released from a helicopter that is descending steadily at 1.00 m/s. After 3.00 s, What is the speed of the mailbag
During a car crash a 65 kg person's head goes from travelling at 50 km ??!??to stationary in 0.15 s. What is the magnitude of the average net force acting on the person's 4.5 kg head
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