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If 35.0 MW of power at 43.2 kV (rms) arrives at a town from agenerator via 3.10 Ω transmission lines.
a. Calculate the emf at the generator end of the lines.
b. Calculate the fraction of the power generated thatis lost in the lines.
An electron traveling horizontally with velocity 1.55 x10^{5} m/s enters a region where a uniform magnetic field is directed into the plane of the paper, find the magnitude of the magnetic force exerted on the particle
a 9.0 ice cube at -30 is in a rigid sealed container from which all the air has been evacuated. how much heat is
What is the total negative charge, in coulombs, of all the electrons in a small 1.05{\rm g} sphere of carbon? One mole of C is 12.0{\rm g} , and each atom contains 6 protons and 6 electrons.
A 40kg child slides down a frictionless playground slide, starting from rest at a height of 2.2 m. He leaves the bottom of the slide moving horizontally at some velocity(v1). What is the distance the two roll to before stopping
Two points are given in polar coordinates by (r,?) = (3.0 m , 40.0°) and (r,?) = (5.0 m, -40.0°), respectively. What is the distance between them
The four strings pass over the bridge of a violin, as shown below. The strings make and angle of 72.0° with the normal to the plane of the instrument on either side of the bridge. determine the force pulling the segment back to its equilibrium posi..
The allowed energies of a simple atom are 0.0eV , 3.5eV and 5.0eV . An electron traveling at a speed of 1.6×10^6m/s collisionally excites the atom. What is the maximum speed the electron could have after the collision
What is the magnitude of the net force on the student. A student who weighs 470N is wearing a backpack that weighs 84N. The student is standing still on level ground.
Assume that the earth is a uniform sphere and that its path around the sun is circular. Calculate the kinetic energy that the earth has because of itsmotion around the sun.
Draw a picture of a polarized and unpolarized E-field (go ahead and just do it at one point in space using an arrow(s)). Polarized means that the E-field oscillates perpendicularly at a fixed orientation relative to the direction of propagation.
A steel wire of length 1.92m with circular cross section must stretch no more than 0.210cm, What minimum diameter is required for the wire
The flowers of the bunchberry plant open with astonishing force and speed, causing the pollen grains to be ejected out of the flower in a mere .3 ms at an acceleration of 2.5 * 104 m/s^2. what is the bee's speed immediately afterward
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