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An air conditioner draws 12 A at 220 V ac. The connecting cord is copper wire with a diameter of 1.450 mm.
a. how much power does this air conditioner draw?
b. If the total length of wire is 18 m, how much power is dissipated in the wiring?
A wire is made by attaching two segments together, end to end. One segment is made of aluminum and the other is steel. What fraction of the length is aluminum
A small object of mass 2.00×10?2kg and charge 3.0uC hangs from the ceiling by a thread. obtain the tension in the thread
find the vertical component of a baseball's velocity if the ball is thrown at a 28m/sec at an angle of 37 degrees with the horizontal.
A train engineer blows a whistle that has a frequecy of 4.0 X 10^2 hz as the train approaches a station. if the speed of the train id 25 m/s, what frequency will be heard by a person at station.
A bicycle wheel has a diameter of 64.1 cm and a mass of 1.81 kg. suppose that the wheel is a hoop with all of the mass concentrated on the outside radius. The bicycle is placed on a stationary stand and a resistive force of 120 N is applied tangent..
When jumping, a flea reaches a takeoff speed of 1.0m/s over a distance of 0.48mm. how high would he go
A rock is thrown vertically upward with a speed of 19.0m/s from the roof of a building that is 70.0m above the ground. What is the speed of the rock just before it strikes the ground
The resultant displacement has a magnitude of 6.6m directed at the angle of 137 degrees from the positive x axis.
What is the length of a box in which the minimum energy of an electron is 1.1 x 10^-18J
Graph the power of the laser when it's on. b) Compute the energy in the pulse. c) Compute the number of photons in the pulse.
What is the magnitude of the acceleration of rock.
Two infinite parallel plates separated by distance S are at potentials 0 and V0. What are the charge densities on the plates
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