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You want to use the idea of electromagnetic induction to make the bulb in your small flashlight glow; it glows when the potential difference across it is 1.5 Volt. You have a bar magnet and a coil with 100 turns, each with area 3.1 ×104 m2. The magnitude of the B field at the front of the bar magnet's north pole is 5.0 × 102 T and reaches 0 T when it is about 4 centimeter away from the pole. Find with what speed should you move the magnet to make the bulb light?
What is the distance of the man from the pier after he walks to the front of the boat at a velocity of 3mph? Assume no friction between the boat and the water.
A 3.0 m long rigid beam with a mass of 120 kg is supported at each end. An 85 kg student stands 2.0 m from support 1. Explain by how much upward force does each support exert on the beam?
a sprinter explodes out of the starting block with an acceleration of 4.5 ms2 which she sustains for 1.5 s. then her
A rock of mass 44 kg accidentally breaks loose from edge of a cliff and falls straight down. The magnitude of the air resistance that opposes its downward motion is 252 N. What is the magnitude of the acceleration of the rock?
A bicyclist rides 4.9 km due east, while the resistive force from the air has a magnitude of 3.4 N and points due west. Find the work done by the resistive force
The trustee made distributions of $8,400 to Linda and $16,000 to Lucy. The trust and both beneficiaries are cash basis, calendar year taxpayers. Calculate the trust's accounting income.
what is the velocity of plane with respect to the ground. A nonconducting sphere has radius R = 2.53 cm and uniformly distributed charge q = +6.00 fC. Take an electric potential at the sphere's center to be V0 = 0.
When a light bulb is connected across the terminals of a battery, the battery delivers 20 W ofpower to the bulb. A voltage of 12.8 Vexists between the terminals of the battery, which has an internalresistance of 0.14 Ω. What is the emf of the battery..
Two 4.2 cm X 4.2cm metal plates are separated by a 0.19mm thick piece of Teflon. What is the capacitance? What is the maximum potential difference between the disks?
A stone is tied to a string (length = 0.727 m) and whirled in a circle at the same constant speed in two different ways. Determine the speed of the stone
For part of the performance of a football kick a punter's ankle is moving at a linear velocity of 279.23 cm/s relative to the knee. find the angle through which the lower leg moves
A Histogram shows that the mean of rain in the area has increased over the last 5 years. What is the probability that the mean would be higher this year than in the previous 5.
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