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a metal airplane flies horizontally at 200. m/s where the Earth's magnetic fiels is vertical and is 45.0uT. If the wingspan is 25.0 meters.
(a) what emf is induced across the wings?
(b) what wingspan would produce 1.0 volt emf?
(c) The plane reverses direction. Does the polarity of the wingtip emf change, i.e. if the left wing was positive, does it now become negative?
A parallel plate capacitor has square plates with sides of length 14 cm. The distance between the plates is 2 mm. How much energy is stored in the capacitor now
What is the capacitance of a pair of circular plates with a radius of 9.0cm separated by 3.2mm of mica?
An electric dipole consists of charges +e and -e separated by 0.76 nm. It is in an electric field of strength 2.50 10^4 N/C, What is the torque on the dipole when it is perpendicular to the field
There are two major types of aberration (defective image formation) in lenses: spherical and chromatic. Spherical aberration comes from fact that a spherical lens has the property of focusing parallel rays to a single point only approximately.
It is desired to slip an aluminum ring over a steel bar. At 10 the inside diameter of the ring is 4.550 and the diameter of the rod is 4.580. Find the temperature at which the ring can be removed
An astronaut on a small planet wishes to measure the local value of g by timing pulses travelling down a wire which has a large object suspended from it. Imagine the wire of mass 3.80 g is 1.60 m long and has a 3.00-kg object suspended from it. A pul..
Fred and Barney are two electric charges that are initially held 1 meter apart and experience an electric repulsion of 10 pounds of force. What would be the force of repulsion between them be if the two were moved closer together so that they were..
A 45.50 cm diameter disk rotates with a steady angular acceleration of 2.00 rad/s2. It starts from rest at t = 0, and a line drawn from the center of the disk to a point P on the rim of the disk makes an angle of 57.30° with the positive x-axis at..
A 275 ball is tied to a string. It is pulled to an angle of 4 and released to swing as a pendulum. A student with a stopwatch finds that 17 oscillations take 20.
Compute the mean and maximum velocities for a liquid with a flow rate of 20 L/min in a 1.5-in nominal diameter sanitary pipeline
A 1.3 m length of wire carrying 5.9 A of current toward the south is oriented horizontally. Estimate the magnitude of the magnetic force on the wire due to the Earth's magnetic field of 5.5 ? 10-5 T at this point
A large piece of cork weighs 0.295 N in air, he spring scale reads 0.903 N. Find the density of the cork
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