Answered: Physics Question

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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The magnetic flux through each turn of a 190-turn coil is given by g = 7.25 x 10-3 sin(wt), where w is the angular speed of the coil and g is in webers. At one instant, the coil is observed to be rotating at a rate of 9.40 x 10² rev/min. (Assume that t is in seconds.) (a) What is the induced emf in the coil as a function of time for this angular speed? (Use the following as necessary: t. Do not use other variables, substitute numeric values. Assume that is in volts. Do not include units in your answer.) E = (b) What is the maximum induced emf in the coil for this angular speed?
In a 240-turn automobile alternator, the magnetic flux in each turn is = 2.50 x 104 cos wt, where is in webers, w is the angular speed of the alternator, and this in seconds. The alternator is geared to rotate five times for each engine revolution. The engine is running at an angular speed of 1.00 x 10³ rev/min. (a) Determine the induced emf in the alternator as a function of time. (Assume & is in V.) & 30.1593 sin (523.5988) X (b) Determine the maximum emf in the alternator. 30.1593 X What are the maximum values of the sine and cosine functions? V
The mutual inductance of two coils (1 and 2) is 48.0 mH.Find the magnitude of the emf induced in coil 2 if the current in coil 1is 35.0 A and increasing at 7.00 A/s
A 30-turn circular coil of radius 4.00 cm and resistance 1.000 is placed in a magnetic field directed perpendicular to the plane of the coil. The magnitude of the magnetic field varies in time according to the expression B = 0.010 Ot+ 0.040 Of, where B is in teslas and tis in seconds. Calculate the induced emf in the coil at t = 5.00 s.
A 113-turn circular coil of radius 6 cm is placed in a uniform magnetic field directed at 30 degrees with the plane of the coil. The magnitude of the magnetic field varies in time according to -3t B(t) = 2.0 e +3.0 where B is in Tesla and time in seconds. Calculate the induced emf in the coil at the time t = 1.0 s.
= B In a 300-turn automobile alternator, the magnetic flux in each turn is B cos wt, where is in webers, w is the angular speed of the alternator, and t is in seconds. The alternator is geared to rotate three times for each engine revolution. The engine is running at an angular speed of 1.00 x 10³ rev/min. (a) Determine the induced emf in the alternator as a function of time. (Assume & is in V.) E = (b) Determine the maximum emf in the alternator. V Need Help? Read It Watch It 2.50 x 10 -4
A 2.80-m length of wire is held in an east-west direction and moves horizontally to the north with a speed of 0.370 m/s. The Earth's magnetic field in this region is of magnitude 50.0 µT and is directed northward and 53.0° below the horizontal. (a) Calculate the magnitude of the induced emf between the ends of the wire. (b) Determine which end is positive. O the east end O the west end O both O neither
In a 280-turn automobile alternator, the magnetic flux in each turn is g =2.50 x 10 cos aut, where og is in webers, au is the angular speed of the alternator, and it is in seconds. The alternator is geared to rotate three times for each engine revolution. The engine is running at an angular speed of 1.00 x 10² rev/min. (a) Determine the induced emf in the alternator as a function of time. (Assume & is in V.) 8- (b) Determine the maximum emf in the alternator. Submit Answer
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