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A toaster uses a Nichrome heating wire. When the toaster is turnedon at 20° C, the initial current is 1.50 A. A few secondslater, the toaster warms up and the current now has a value of 1.28A.The average temperature coefficient of resistivity for Nichromewire is 4.50 10-4 (C°)−1.What is the temperature of the heating wire?
The upward normal force exerted by the floor is 700 on an elevator passenger who weighs 720. What is the reaction force to weight of the passenger
A box is sliding with a speed of 4.50 m/s on a horizontal surface when, at point P, it encounters a rough section. What is the coefficient of friction at the stopping point
What is a galaxy rotation curve and describe the rotational curve for the Milky Way? How does the shape of the curve indicate the presence of dark matter?
Find out the magnitude and direction of the rockets acceleration. Give the direction as an angle above the horizonal.
q1. what is the maximum speed with which a 1200- car can round a turn of radius 71 on a flat road if coefficient of
A particle with charge 94.5 nC is moving in the region where there is a uniform magnetic field of magnitude 0.45 T pointing in the negative x-direction. What is the magnetic field vector in vector notation
How large a pressure in pascals would be required to compress water by 10 percent? How high a column of water (in kilometers) would be needed to furnish this pressure?
A block is attached to a chord passing over a pulley through a hole in a horizontal frictionless surface. what is the new angular velocity
Romeo is chucking pebbles gently up to Juliet's window, and he wants the pebbles to hit the window with only a horizontal component of velocity. he is standing at the edge of a rose garden 4.5 m below her window and 5 m from the base of the wall. How..
The mass of Venus is 80% that of Earth while its radius is 95% that of Earth. What is the value of the acceleration due to gravity on Venus
What mass of water (at 4.0 C) can be contained in a rectangular box whose dimensions are 10 cm by 5.00 cm by 1.00 cm? The density of water at 4C is 1.000 X 10 kg/m-cubed.
An RLC circuit has a reactance, due to its capacitance, of 19 kilo ohms a reactance, due to its inductance, of 10 kilo ohms; and a resistance of 25 kilo ohms
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