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Two point charges, +5.0 µC and ?2.0 µC, are separated by 4.0 m. What is the electric potential energy?
A 740g, 40cm long rod is free to rotate about a frictionless axle at one end. What is the rod's angular velocity immediately after the blow
Particle A has a mass of 5.5 g, particle B has a mass of 1.3 g. Particle A is located at the origin, particle B at the point (x, y) = (25 cm, 0). What is the location of the center of mass
A coal-fired plant generates 600MW of electric power. Theplant uses 4.8 X 10^6 kg of coal each day and the heat ofcombustion is 3.3 X 10^7 J/kg. What is the Carnot efficiency
Ions A and B are separated by 12 E -10m. Ion A has a charge of -2e. The electrostatic force between the two ions has a magnitude of 1.598 E -9 N. How many electrons are "missing" from it
A rectangular loop is 1.2 m wide and 0.80 m tall and carries 0.50 A of current clockwise. Find the net force and torque on the rectangular loop
When the centrifuge reaches an angular speed of 2.5 rad/s, the trainee experiences a total acceleration equal to 4.8 times the acceleration due to gravity. Explain how long is the arm of the centrifuge?
In a 45° - 90° - 45° prism with a ray of light entering and exiting on the long side of the prism after undergoing two total internal reflections. Determine the minimum index of refraction of the prism in order for this to occur
q1. a guitar string is 82 cm long and has a mass of 3.6 g. from the bridge to the support post l is 60 cm and the
David is running at a constant speed of 6.0 meters per second when he passes Cindy, who is at rest. How long will it take for Ciny to catch up to David
A 1200-kg cannon shoots a 28-kg shell at an angle of 25° above the horizontal and a speed of 470 m/s. What is the recoil velocity of the cannon
A piece of balsa wood with density 0.50g/cm^3 is released under water. What is the initial acceleration?? Repeat for a piece of maple with density 0.760 g/cm^3? Repeat for a ping-pong ball with the average density of 0.127 g/cm^3.
A crate of mass 9.8 kg is pulled up a rough incline with an initial speed of 1.56 m/s. The pulling force is 102 N parallel to the incline, What is the change in kinetic energy of the crate
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