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Two very large parallel metal plates, separated by 0.20 m, are connected across a 12-V source of potential. An electron is released from rest at a location 0.10 m from the negative plate. When the electron arrives at a distance 0.050 m from the positive plate, how much kinetic energy has the electron gained? (e = 1.60 × 10-19 C)
An extremely accurate spectral scan reveals that the mass fraction to mole fraction ratio for methane is 0.9341875 and the mole fraction of methane is 0.4281378. Determine the name of the unknown gas (in English).
A piece of wood with a density of 766 kg/m3 is tied with a string to the bottom of a water-filled flask. The wood is completely immersed, and the tension in the string is 0.79 N. What is the volume of the wood?
A 6.8kΩresistor has burned out in a circuit. You must replace it with another resistor with the same resistance value. If the resistor carries 10mA, what should its power rating be? Assume that you have available resistors in all the standard powe..
A fisherman is reeling in afish. In 9.0 s he winds 3.5 m of fishing line onto a reel whoseradius is 2.3 cm (assumed to be constant as an approximation). Determine the angular speed of the reel
The loaded cab of an elevator has a mass of 3000kg and moves 216-m up the shaft in 23s at constant speed. At what average rate does the force from the cable do work on cab.
A particle of charge q = e moves in a circle of radius = 0.46m with speed v = 2.800×107 m/s.Treating the circular path as a current loop with constant currentequal to its average current, find the maximum torque exerted on the loop by a uniform mag..
A 2.0 m conductor is formed into a square and placed in the horizontal xy-plane. What is the magnetic flux through the conductor
Given a rod with + 2 micro C and a sphere with a charge of -2 micro C ,how many electrons must be added to the rod from the sphere get an overall charge of -5 micro C on the rod
When an immersion glass thermometer is used to measure the temperature of a liquid, the temperature reading will be affected by an error due to heat transfer between the liquid and the thermometer. Suppose you want to measure the temperature of 7 ..
an oscillating lc circuit has a current amplitude of6.50ma a potential amplitude of 250 mv and a capacitance of 245
The wing of an airplane has an average cross-sectional area of 15 m2 and experiences a lift force of 65,000 Newton. Find the average difference in the air pressure (in N/m2) between the top and bottom of the wing
An electric vehicle starts from rest and accelerates at a rate of 1.6 m/s2 in a straight line until it reaches a speed of 20 m/s. The vehicle after that slows at a constant rate of 1.4 m/s2 until it stops. (1) How much time elapses from start to s..
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