Determine the amplitude of the alternating emf
An electromagnetic generator consists of a coil area 2.0x10^-4 m^2 having 300 turns of wire. Determine the amplitude of the alternating emf delivered by this coil if rotating at a rate of 2000 rev/min in the magnetic field of 0.020 T?
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A 3 m deep swimming pool evaluates 25 m by 15 m. It is filled with fresh water. What force does the water apply on the bottom of the pool?
The coefficient of static friction among the foot of the ladder and the ground is around 0.40. A man weighing 710 N climbs slowly up the ladder. (i) Determine the maximum frictional force which the ground can apply on the ladder at its lower end?
In order to identify the movement of water in the ocean, oceanographers at times rely on the motional emf produced by the movement of the water via the magnetic field of the Earth.
A helicopter consists of blades having length 4.0 m rotating at 3.0 rev/s in a horizontal plane. When the vertical component of the magnetic field of Earth is around 6.5x10^-5 T, determine the induced emf among the tip of a blade and the hub?
Write conjectures about kinds of numbers which can be written as sums of nonzero consecutive whole numbers and test the conjectures for some numbers greater than 50.
Given variable that has a t distribution with specified degrees of freedom, what percentage of the time with its value will fall in the indicated region?
Approximate the emf induced about the patient's trunk, 0.90 m in circumference. Must the patient be shoved into the magnetic field more gradually?
After evaluating the speed of sound u several times, a student concludes that the standard deviation s_u of her measurements is s_u = 10 m/s. When all uncertainties were truly random, she could get any desired accuracy by making adequate measureme
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