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Two electrically charged pith balls, each having a mass of 0.15 g, are suspended from light threads of equal length. Determine the magnitude of the horizontal repulsive force, F, acting on each ball if the measured distance between them is . r = 200 m
A solenoid is made by winding 1961 turns of wire into a hollow cylinder 1.1 cm in diameter and 29.9 cm in length. Find the inductance of the solenoid
A thin, 70.0g disk with a diameter of 7.50cm rotates about an axis through its center with 0.270J of kinetic energy
I. Determine the ramps speed when the crate reaches B (Assume that the ramp surface and the floor are smooth) if θ=350 II. Determine the distance the ramp travels when the crate reaches B if θ=350 (Assume that the ramp surface and the floor are smo..
A student sits at rest on a piano stool that can rotate without friction. The moment of intertia of the student-stool system is 4.1 kg*m^2. What is the resulting angular speed of the student
A roller coaster (482 kg) moves from A (3.63 m above the ground) to B (28.6 m above the ground). What is the change in the car's kinetic energy KEf - KEo from A to B
A mass of 10-KG accelerates along a straight line from a speedof 54 KM/hr to 108 KM/hr in 5 minutes. Find the force acting on this mass
A charge of uniform volume density 40nc/m3 fills acube with 8.0 cm edges. What is the total electric flux through the surface of this cube?
A mass hung on a string that is wrapped around an axle on a wheel produces a tension in the string of 5.65 N. The axle has a radius of 0.045 m. What is the angular acceleration of the system
A high fountain of water is located at the center of a circular pool, How high is the fountain
An electric heater is used to heat a room of volume 62m3 . Air is brought into the room at 50 and its completely replaced twice perhour. Heat loss through the walls amounts to approximately 850kcal/h. If the air is to be maintained at 20o C, what mi..
In a 231-turn automobile alternator, the magnetic flux in each turn is fB = (2.36E-4 T*m2) cos(?t), where ? is the angular speed of the alternator. determine the maximum emf in the alternator
What is the acceleration due to gravity on the surface of this hypothetical planet? What is the uncertainty in the acceleration due to gravity found above?
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