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All of the electrical outlets in a room are connected in asingle parallel circuit. The circuit is equipped with a 20-A fuse,and the voltage is 120 V.
A. What is the maxium power that can be supplied by the outlets without blowing the fuse?B. How many 1,200 W appliances can be plugged into the sockets without blowing the fuse?
Five objects, each of mass M, are equally spaced on the arc of a semicircle of radius R, find gravitational field at the center of curvature of the arc
In a conversion from military to peacetime use, a missile with a maximum horizontal range of 160 km is being adapted for studying the upper atmosphere
The angular position of a pendulum is represented by the equation ? = 0.0310 cos ?t, Determine the period and length of the pendulum
A 1.50 ? 103-kg car starts from rest and accelerates uniformly to 15.2 m/s in 11.3 s. Find the average power developed by the engine
Squaw Valley ski area in California claims that its lifts can move 48300 people per hour. estimate the maximum total power needed
A simple pendulum of length l and mass m is attached to a massless spring with elastic constant k. The attachment point moves only in a vertical direction. Obtain the Lagrange's equations of motion
(a) A clear image of an object is formed on the retina of a human eye. As the object moves closer to the eye, for a clear image to still be formed on the retina.
Compute the volume charge density of the atmosphere, assuming it to be uniform between 300 and 450 m. (Hint: You may neglect the curvature of the earth. Why?)
A constant force is applied to an object, causing the object to accelerate at 6 m/s^2?, What will the acceleration be if the force is halved
The maximum angular magnification of a magnifying glass is 12.0 when a person uses it who has a near point that is 25.0 cm from his eyes. Obtain the focal length of the objective
A solid disk is rotating about an axis with uniform angular velocity. another disk, with the same moment of intertia about the rotation axis, how is the new angular velocity related to the old one
The secondary coil of a neon sign transformer provides 7500 V at 10.0 mA. The primary coil operates on 120 V. What does the primary draw
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