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Lightbulbs with the power ratings giving in the figure are connected in a circuit as shown.
(a) What current does the voltage source deliver to the circuit ?
(b) Find the power dissipated to each bulb. (Take the bulb%u2019s resistances to be the same as at their normal operating voltage.)
A 0.14 kg sphere hangs on a string from the ceiling of a car that is accelerating horizontally at a constant rate. What is the magnitude of the net force on the sphere
For a string stretched between two supports, two successive standing-wave frequencies are 505Hz and 630Hz . There are other standing-wave frequencies lower than 505Hz and higher than 630Hz.
Suppose in the drawing that I1 = I2 = 42.4 A and that the separation between the wires is 0.0215 m. What is the magnitude of the external field
A large plastic block has a net charge of -1.0mC. How many more electrons than protons are in the block
A plane of a 5.0 cm x 8.0 cm rectangular loop of wire is parallel to a 0.19 -T magnetic field. The loop carries a current of 6.2 A. obtain the magnetic moment of the loop
The charges are fixed to the corners of a 0.44-m square, one to a corner, in such a way that the net force on any charge is directed toward the center of the square.
Two rays leave a point source and strike a front-silvered mirror, making angles with the normal of 30.0° and 52.5°, respectively. What is the angle between the two reflected rays
The captain of a boat wants to travel directly across a river that flows due east with a speed of 1.00 m/s. Estimate the speed of the boat relative to a person
A brave child decides to grab on to an already spinning merry-go-round. What is the moment of inertia of the merry-go-round with respect to its central axis
If F(r) is the force on an object as a function of of radius r, show that the "tidal" force on an object of lenght delta r is delta F= (dF/dr)delta r
Observer S detects two flashes of light. A big flash occurs at x1 = 1242 m and, 6.06 ?s later, a small flash occurs at x2 = 802 m. what is the time interval between the flashes
A massless, rigid board is placed across two bathroom scales that are separated by a distance of 1.74 m. Find the weight of the person
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