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An alpha particle (m = 6.68×10?27 kg, q = 3.20×10?19 C) circularly orbits a charged sphere at a radius of 5.00 cm from the sphere's center. The electric attraction between the two objects provides the centripetal force to keep the particle in orbit. The orbital speed of the particle is 6.460e+4 m/s. What is the charge on the sphere?
A child is pushing a merry-go-round. The angle through which the merry-go-round has turned varies with time according to ?(t)=?t+?t3, What is the initial value of the angular velocity
A large storage tank is filled to a height 81 cm. The tank is punctured with a small hole at a heiht of 38 cm from the bottom of the tank. How far from the tank will the stream land
A positive point charge q1=2.5x10^-5C is fixed at the origin of corrdinates and a negative charge Q2=-5x10^-6C is fixed to the x axis at x=+2m
Police investigators, examining the scene of an accident involving two cars, measure 72-m-long skid marks of one of the cars, Estimate the initial speed of that car assuming a level road
What is magnitude of the angular momentum
During an adiabatic expansion the temperature of 0.500mol of argon (Ar) drops from 48.0?C to 15.0?C. What is the change in internal energy of the gas
a 1.99 kg block slides on a rough, horizonatl surface. The block hits a spring with a speed 2.16 m/s, what is the force constant of the spring
A toy car with a mass of 120 g moves to the right with a speed of 0.43 m/s. What is the change in speed of the car
A ladder 5.6 m long leans against a wall inside a spaceship. From the point of view of a person on the ship, Find the angle the ladder makes with the floor
A diving board of length 3.00m is supported at a point 1m from the end, and a diver weighing 520 m stands at the free end . The diving board is of uniform cross section and weighs 270m.
A guitar string of diameter 0.6 mm and length 0.74 m is subject to a tension of 140 N. what is Young's modulus of the string
Object of masses: mass1= 4.000 kg and mass2=9.000 kg, are connected by a light string that passes over a frictionless pulley. Determine the acceleration of each object
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