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Which of these systems are made of identical particles? Explain(1) 4 electrons and 4 anti-electrons (“positrons”, with positive electric charge) in a central Coulomb potential(2) a gas of 10^33 electrons in a central Coulomb potential(3) 4 protons and 4 electrons
A hydraulic lift is lifting a car that weighs 13 kN. The area of the piston supporting the car is A, How far must the small piston be pushed down to raise the car a distance of 1.3 cm
A loop of diameter d = 10 cm, carrying a current I = 0.2 A is placed inside a magnetic field = 0.3 T. Calculate the magnitude of the torque on the loop
A 150- crate, starting from rest, is pulled across a floor with a constant horizontal force of 360 . For the first 11 the floor is frictionless, and for the next 11 the coefficient of friction is 0.31. Illustrate what is the final speed of the c..
do believe that we as a country should be taking more or less preventative measures against global warming?explain why
Two point charges are on the y axis. A 3.80-µC charge is located at y = 1.25 cm, and a -2.18-µC charge is located at y = -1.80 cm. Find the total electric potential at the origin
A small body of mass 0.13 kg is undergoing simple harmonic motion of amplitude 9.0 cm and period 0.10 s. What is the maximum value of the force acting on it? If the oscillations are produced by a spring, what is the spring constant?
q1. a 280 block on a 50.0 -long string swings in a circle on a horizontal frictionless table at 80.0.what is the speed
A 28.0-N block rests on a horizontal surface. The coefficients of static and kinetic friction between the surface, What is the force of friction acting on the block
A laser emits a narrow, circular beam of light. The radius of the beam is 1.37×10-3 m, and the power is 1.44×10-3 W
A superball with a mass m = 61:6 g is dropped from a height h = 1.76m. What is the momentum change of the ball during its collision with the floor
A 0.2 kg object is suspended from a spring with a spring constant of K = 10 N/m. What is the potential energy of the system
q1. two thin wedding bands each with mass m and radius r are welded together so that each ring passes through the
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