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A long, rigid conductor, lying along the x axis, carries a current of 4.0 A in the negative direction. A magnetic field B is present, given by B = 2.5i + 8.5x2 j , with x in meters and B in mT. Calculate the k-component of the force on the 2 m segment of the conductor that lies between x = 1.0 m and x = 3.0 m.
What is speed of the second train, which travels faster
A helium-neon laser (λ = 632.8 nm) is used to calibrate a diffraction grating. find the spacing between adjacent grooves in the grating
A water hose 4.00 cm in diameter is used to fill a 25.0 L bucket. If it takes 3.00 min to fill the bucket, If the hose has a nozzle 2.00 cm in diameter, find the speed of the water at the nozzle
You are asked to construct a capacitor having a capacitance near 1 nF and a breakdown potential in excess of 10,000 V. What is the breakdown potential of this capacitor
A certain freely falling object requires 1.56 s to travel the last 37.0 m before it hits the ground. From what height above the ground did it fall.
Fleas can jump quite high; experiments show that they reach an altitude of 130 times their own height when they jump vertically! Suppose instead that a flea can jump, What is the take-off speed for this flea
An electron and a proton are accelerated starting from rest through a potential difference of 10 million volts. Find the momentum (in MeV/c) and the kinetic energy (in MeV) of each
A gasoline engine takes in 1.70×10^4J of heat and delivers 3900J of work per cycle. What mass of fuel is burned in each cycle
An automobile having a mass of 1,000 kg is driven into a brick wall in a safety test. The bumper behaves like a spring with constant 5.85 106 N/m, What was the speed of the car before impact
A rock is thrown upward from the level ground in such a way that the maximum height of its flight is equal to its horizontal range R. (a) At what angle ? is the rock thrown? (b) In terms of its original range R, what is the range Rmax the rock can at..
Suppose two identical spheres are insulated: sphere A carries +3.54Q and sphere B carries -20.2Q, What is the charge on sphere A now
Three equal point charges, each with charge 1.25%u03BCC , are placed at the vertices of an equilateral triangle whose sides are of length 0.250m. What is the electric potential energy U of the system
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