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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)
a helicopter propeller blade starts from rest and experiences a constant angular acceleration of 14.5 rads2. find the
The concrete sections of a certain superhighway are designed to have a length of 27 meter. The sections are poured and cured at 10.0°C. Find what minimum spacing should the engineer leave
a person of mass 50 kg rides in a ferris wheel of radius 20 m. the ferris wheel completes a rotation once every 10
An ac generator with a frequency of 30.0 Hz and an rms voltage of 12.0 V is connected to a 45.5-µF capacitor, What is the maximum current in this circuit
A football is kicked at a velocity of 42 m/s with an angle of 61 degrees to the ground.
A particle moves in a circle of radius 83 m with a constant speed of 22 m/s. (a) what is its angular velocity in radians per second regarding the center of the circle? How many revolutions does it make in 30 s?
The curve is given by F = a/x2, with a = 9.0 N · m2. Find the work done on the particle by the force as the particle moves from x = 1.0 m to x = 3.0 m by
A lunch tray is being held in one hand, as the figure illustrates. The mass of the tray itself is 0.214 kg, and its center of gravity is located at its geometrical center. Obtain the force exerted by the thumb
Calculate the amount of energy (kJ/kg) required to convert saturated water at 150 kPa to superheated steam at 180 degrees celius and at the same pressure
A 40.00-W eletric motor is able to accelerate a 8755 g car from rest to 30.00 mph in 31.10 seconds. Calculate the efficiency of the motor
A 38.0-kg child swings in a swing supported by two chains, each 3.08 m long. The tension in each chain at the lowest point is 426 N. Find the force exerted by the seat on the child at the lowest point
Calculate the conduction rate of heat H=deltaQ/deltaT through an A=2.0 m^2 glass window of the thickness of the glass is 4 mm and the temperature difference between the inside and the outside is 20 degree celsisus
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