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The heating element of a simple heater consists of a 2.2-m-long, 0.65-mm-diameter nichrome wire. When plugged into a 120V outlet, the heater draws 9.0A of current when hot. What is the wire's resistance when it is hot? Use your answer to part A to calculate the resistivity of nichrome in this situation.
Assume a neuron in the brain carries a current of. Treating the neuron as a straight wire, what is the magnetic field it produces at a distance of 7.50.
an object is at a distance d to the left of a flath screen. A converging lens with focal length f
The pendulum is now swinging on Pluto. Calculate the new period of oscillation in terms of T, knowing that on Pluto the gravity is 1/16 of gravity on the Earth
When she reaches the bus, explain how fast is the bus traveling? If the student's top speed is 2.20m/s^2 , will she catch the bus? What is the minimum speed the student must have to just catch up with the bus?
George just graduated from college and is going on his first job interview. He has learned that there are two other candidates. Because of the information he has learned about the serial position effect, George asks to be either the first or the last..
If the density of conduction electrons is 10^27 m^3 and the wire has a radius of one millimeter, what is the electrical current through this wire
what is the volume of an iron atom. What is the ratio of the mass density of girder A to the mass density of girder B.
A proton is initially at rest at a point where the potential is 507V. Sometime later the proton is at a point where the potential is 187V. If no force other than the electrostatic force acts on the proton, what is its final kinetic energy.
Introductory Mechanics: Calculate the smallest coefficient of static friction
A small 15{rm g} bug stands at one end of a thin uniform bar that is initially at rest on a smooth horizontal table. The other end of the bar pivots about a nail driven into the table and can rotate freely, without friction.
The rms speed of a sample gas is increased by 2 %, What is the percent change in the temperature of the gas
Nichrome wire of cross-sectional radius 0.758 mm is to be used in winding a heating coil. find the length of wire you must use to wind the coil
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