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A wheel 2.25 m in diameter lies in a vertical plane and rotates about its central axis with a constant angular acceleration of 3.50 rad/s2. The wheel starts at rest at t = 0, and the radius vector of a certain point P on the rim makes an angle of 57.3° with the horizontal at this time. At t= 2.00 s, find the angular position of the point P.
Two identical resistors of R0 = 30 ? are connected head-to-tail. Write an expression for the new length in terms of the old length L.
The density of free electrons in gold is 5.90 x 10^28 m-3. The resistivity of gold is 2.44 x 10-8 at a temperature of and the temperature coefficient of resistivity is 0.004 ()-1. A gold wire, 1.30mm in diameter and 27cm long, carries a current of..
Assume the charge on black hole is 5740 C. At what distance from it is the electric potential equal to 1100 V.
Two identical conducting spheres, fixed in place, attract each other with an electrostatic force of -0.6311 N when separated by 50 cm, center-to-center, What are the smaller and larger values
The company adheres to a 60% dividend payout ratio and has a P/E ratio of 19. There are 21,000 shares of stock outstanding. Illustrate what is the amount of the annual net income for the firm?
A yo-yo has a rotational inertia of 1140 g·cm2 and a mass of 81.3 g. Its axle radius is 3.27 mm, and its string is 106 cm long, What is the magnitude of its linear acceleration, rotational kinetic energy
Two charges q1 = 6 µC, q2 = -49 µC, are L = 19 cm apart. A third charge is to be placed on the line between the two charges. How far from q1 should the third charge be placed so that the net electric force on the third charge is minimized?
A 80 pF capacitor is charged to a potential difference of 140 V, and the charging battery is disconnected. what is the capacitance of this second capacitor
The force vector A has a magnitude of 75.0 newtons (N) and points due east. The force vector B has a magnitude of 138 N and points 75.6 ° north of east. Find the (a) magnitude and (b) direction of A - B
The acoustical system is driven by speaker emitting a 432Hz note. If destructive interference occurs at a particular instant, by what least amount amount must the difference of two path lengths in the U-shaped tube be increased so as to hear const..
A mole of air in a closed container is initially at 300k. Suppose that you now add 10 J of heat to the air, without doing any work on it, what is the total thermal energy of the air
Coherent light that contains two wavelengths, 660 nm and 470 nm, passes by two narrow slits with a separation of 0.280 mm and an interference pattern is observed on a screen which is a distance 4.40 m from the slits.
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