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Question: You may have already learned the equation for the power delivered by an electrical circuit: P = IV , where P is the power delivered (in watts = joules/second); I is the current (in amperes); and V is the voltage drop across the load, which is also equal to the voltage provided by the source. Derive this equation in terms of the rate of energy given to the electrons by the source (which must be equal to the rate at which electrons deliver energy to the load).
If a hockey puck experience a force of 835 N over a distance of 0.200 m, it will got from rest to 45.0 m/s, what is the mass of the hockey puck?
The band gap of the semiconductor gallium arsenide (GaAs) is 1.43 eV , and the bandgap for the semicondcutor aluminum gallium arsenide (AlGaAs) is 2.06 eV. find the maximum wavelength absorbed by GaAs
In a single-slit diffraction pattern on a flat screen, thecentral bright fringe is 1.6 cm wide when the slit width is 3.7 x10-5 m. What is the width of the second slit
A uniform electric field exists in a region between two oppositely charged plates. find the speed of the electron as it strikes the second plate
A neutrino must pass within about 10^-18m of a quark to have any chance of interacting with it. estimate the average distance (in light years) that a neutrino would travel through the lead before it interacts
the outer wall of a building is constructed from concrete blocks. if the wall is 5.0 m long at 20 degrees celcius, How much shorter is it on a cold day
A spherical shell is formed by taking a solid sphere of radius 25.0cm and hollowing out a spherical section from the shell's interior. What is the ratio of the outer area to the inner area of the shell
A father pulls his young daughter on a sled with constant velocity on a level surface through a distance of 25 m. The total mass of the sled and the girl is 45 kg and the coefficient of kinetic friction between the sled runners and the snow is .35..
A long nonconducting cylinder (radius = 12 cm) has a charge of uniform density (5 nC/m3) distributed throughout its volume. Determine the magnitude of the electric field 15 cm from the axis of the cylinder.
Two speakers, one directly behind the other, are each generating a 429-Hz sound wave. What is the smallest separation distance between the speakers that will produce destructive interference at a listener standing in front of them? Take the speed of ..
A cat stands on a board of wood in a frozen frictionless pond. The mass of the cat is 4.0 kg, and the mass of the board is 3.0 kg. how far does the cat move in relation to the pond
a river with a water temperature T(L)=20 degree C is to be used as the low temperature reservoir of a large power plant, what is the largest electrical output that the plant can deliver to its customers
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