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Consider a U-shaped metal rod with a metal rod touching it, which is free to slide (shown below). A magnetic field is out of the page everywhere, as in the diagram below.
If the rod is moving to the right at a velocity v,
a) would there be a current? Explain. If so, determine the direction of the current.
b) would there be an emf? Explain. If so, calculate the emf in terms of the magnetic field, B, the velocity of the rod, v, and the length l. Show your work; do not just write down your result. Show your calculation.
A woman walks 290 m in the direction 37° east of north, then 177 m directly east. Find (a) the magnitude and (b) the angle (from due east) of her final displacement from the starting point. (c) Find the distance she walks.
Crew members attempt to escape from a damaged submarine 200 m below the surface. What force must they apply to a pop-out hatch, which is 1.2 m by 0.70 m, to push it out at that depth? Assume that the density of the ocean water is 1025 kg/m3.
A diffraction grating produces a first order bright fringe that is 0.156 m away from the central bright fringe on a flat screen which is 0.550 m away. find the wavelength of the light shining on the grating
Your friend decides to produce electrical power by turning a coil of 100,000 circular loops of wire around an axis parallel to a diameter in the Earth's magnetic field, What will be the average power obtained from this device
The "size" of the nucleus in Rutherford's model of the atom is about 1.0 fm = 1.0 X10-15 m. Decide the repulsive electrostatic force among two protons separated by this distance. Decide (in MeV) the electrostatic potential energy of the pair of proto..
a bicycle wheel with radius 35 cm has 73 charges 1.0 microc each spaced at regular intervals along its edge. a flea
To balance a very light rod when a down force is applied at a point 0.77m to the left of a supporting fulcrum (pivot point), What is the magnitude of the downward force
In a common test for cardiac function the patient walks on an inclined treadmill. Find the power required from a 75 kilogram patient when the treadmill is sloping at an angle of 15o and the velocity is 3.3 km/h.
How to find out the tension in the cable
A proton moves perpendicular to a uniform magnetic field at a speed of 1.40 107 m/s and experiences an acceleration of 2.60 1013 m/s2 in the positive x-direction when its velocity is in the positive z-direction. Determine the magnitude and direction ..
Consider a rectangular loop of wire 7.3 cm by 8.0 cm in a uniform magnetic field of magnitude 1.1T. What is the average induced emf in the loop
An astronauts life to to her ship comes loose ans she finds herself stranded at 100m from the ship. how long does it take her to coast back to his ship
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