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Two charges are separated by a distance d and exert mutual attractive forces F on each other. If the charges are separated by a distance of d/3, what are the new mutual forces? q1 = +2C and q2 = -2C
When two resistors are connected in a parallel configuration the voltages across each are the same, What are the currents through these resistors
Wildlife biologists fire 20-g rubber bullets to stop a rhinoceros charging at 0.81m/s. What impulse does each bullet deliver
A particle with a charge of -1.5uC and a mass of 2.5x10-6 kg is released from rest at point A and accelerates toward point B, arriving there with a speed of 42 m/s. The only force acting on the particle is the electric force. (a) Which point is at..
Only two forces act on an object (mass = 4.60 kg). (F = 68.0 N.) Determine the magnitude and direction (relative to the x axis) of the acceleration of the object.
What would the bank angle be for a circular racetrack with radius 120 m so that a car can go around the curve safely at a maximum of 21 m/s
A conductive loop of radius r = 1.0 cm falls towards a stationary solenoid of 100 turns per cm carrying a current of I = 2.00 A. What is the direction of the current induced in the loop
An 60 kg skier is sliding down a ski slope at a constant velocity. The slope makes an angle of 5 degrees above the horizontal direction. What is the coefficient of kinetic friction between the skis and the snow
A typical American house requires an average 20 kW for heating. Explain how many homes could be heated with the waste heat of this one power plant?
A sound source emits sounds of frequency 190 Hz that travel by still air at 340 m/s. The listener moves at 75 m/s relative to still air toward the stationary source. What is the wavelength of the sound between source and listener.
A 7.0 k resistor is in series with a 26.0-mH inductor, Calculate the impedance of the circuit for the following source frequencies
An electric water heater operates at 66 A and 16 kilowatts, Calculate N (the total number of resistors) and the cost of manufacturing the heating element if in a pack of 100 resistors cost $0.50
When it rains, water vapor in the air condenses into liquid water, and energy is released. (a) How much energy is released when 0.0285 m (1.12 inch) of rain falls over an area of 2.59×106 m2 (one square mile)? (b) If the average energy needed to h..
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