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A roller-coaster car has a potential energy of 441 000 J and a kinetic energy of 112 800 J at point A in its travel. At the low point of the ride, the potential energy is zero, and 46 000 J of work have been done against friction since it left point A.
What is the kinetic energy of the roller coaster at this low point?
Two point charges totaling 7.50 µC exert a repulsive force of 0.250 N on one another when separated by 0.619 m. What is the charge on each if the force is attractive
What is magnitude of the breaking force
A generator connected to an circuit has an rms voltage of 120V and an rms current of 34mA. what is the inductive reactance of the circuit
When an object of 180 kg hangs from a cord around light pulley of the cord between point P and the pulley is lenght L = 2.0 m. how many loop will be formed
Using a map of the United States we find that Atlanta, GA is in a direction north of east from Dallas, TX. What is the displacement from Dallas to Chicago
A nucleus whose mass is 3.985536 × 10-25 kg undergoes spontaneous "alpha" decay. The original nucleus disappears and there appear two new particles
Explain the notion of a statistical generating mechanism. Why do we need it?
a uniformhorizontal string has a mass of 0.030 kg and a length of 6.00 m. this string is attached toa wall at one end.
question a diver pushes off horizontally from the top of a vertical cliff that is 40.0 m high from water surface below.
a) What is the magnetic field due to the wire at the location of the electron? b) What is the magnetic force on the electron due to the current in the wire?
What angle(s) between the normal to the plane of the loop and the field would result in a flux with a magnitude of 1.1×102T•m2
What is the instantaneous speed at these times? What is the average velocity between t = 2 s and t = 3s ?
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