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a positron is a particle with the same mass and magnitude charge as an electron, but a positron has a positive charge. If a positron and electron are held a distance of 0.500 pm apart and then both are released from rest, when they are 0.130 pm away from each other...
(a) what is the system's total kinetic energy (i.e. what is the sum of the kinetic energies of both particles)?
A car is traveling 23 m/s when the driver sees a child standing in the road. He takes 0.8 s to react, then steps on the brakes and slows at 6.0 m/s2. Explain how far does the car go before it stops?
A 3.50-m-long, 360kg steel uniform beam extends horizontally from the point where it has been bolted to the framework of a new building under construction, What is the magnitude of the total torque due to the worker and the force of gravity
A loudspeaker on a tall pole broadcasts sound waves equally in all directions. If the sound output is 7.0 W, at what distance from loudspeaker is the sound intensity level 85.7 dB.
Three deer, A, B, and C, are grazing in a field. Deer B located 64 m from dear A at an angle of 53° north of west, What is the distance between deer A and C
A block rests on the frictionless horizontal surface and is attached to a spring. While set into simple harmonic motion, block oscillates back and forth with an angular frequency of 6.5 rad/s.
How long does it take for amplitude to drop to half its initial value . How long does it take for mechanical energy to drop to half its initial value.
If the mass of the rotor is 4.80 kg and it can be approximated as a solid cylinder of radius 0.0710 m, throughout how various revolutions will the rotor turn before coming to rest.
The same voltage is applied between the plates of two different capacitors. When used with capacitor A, this voltage causes the capacitor to store 13, Determine qB
A 18.60 kg piece of zinc at 75 degrees Celsius is placed in a container of water. The water has a mass of 20 kg and has a temperature of 10.10 degrees Celsius before the zinc is added. What is the final temperature of water and zinc.
A Carnot engine with a hot-reservoir temperature of 360 has the same thermal efficiency. What is the cold-reservoir temperature in C?
A stone with a mass of 0.700 is attached to one end of a string 0.8 long. The string will break if its tension exceeds 65.0 . The stone is whirled in a horizontal circle on a frictionless tabletop; the other end of the string remains fixed.
A 2100 kg car traveling to the right at 32m/s is chasing a second car of the same mass that is traveling to the right at 10m/s.
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