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A current with sinusoidal time-dependence, whose peak value is 3.55 A and frequency is 775 cycles per second, passes through a long straight wire. A rectangular 18.2 cm × 8.19 cm loop of copper wire is located 20.2 cm from the wire and is coplanar with it. Calculate the average power dissipated by the loop, if its resistance is 64.3 ?.
A ball of mass m = 3 kg is attached to a vertical pole by two ropes and moves in a horizontal circle at a constant speed. Find the tension in the lower rope
The isotope 226 Ra Alpha decays. its measured atomic mass is 226.02541 amu, the daughter nucleus has a mass of 222.01758 amu and helium has atomic mass 4.0026 amu. calculate the kinetic energy of the alpha particle
Object A is acted on by only object B. The mass of object A is 20.0 kg and its acceleration is 4.00 m/s2 west. Object B is acted on by two forces, the force of object A on object B and another unknown force.
A physics demo launches a ball horizontally while dropping a second ball vertically at exactly the same time. Which ball hits the ground first? and why
The energy released by each fission within the core of a nuclear reactor is 2.00 x 102 MeV. Determine the power (in watts) that the reactor generates
Two cylinders have the same radius R = 0.6 m and length 0.6 m, but one is a solid cylinder of massM1 = 4.5 kg, What is the ratio of the final speed of the solid cylinder to that of the hollow cylinder
A ball is thrown toward a cliff of height (h) with a speed of30 m/s and an angle of 60 degrees above the horizontal. What is the ball's impact speed
A plane is pointed in the positive x direction and is flying with an speed of (200, 0, 0) m/s relative to the air. Find the velocity of the plane with respect to the ground
a rock is thrown downward from the top of a 40 m tower with an initial speed of 12 m/s. if g-9.8 m/s^2, what is the speed of the rock just before hitting the ground
What is the average force felt by a 0.06 kg tennis ball if it strikes the racket at a speed of 30m/s and leaves the racket with a speed of 50m/s in the opposite direction
A 0.14-kg balloon is filled with helium (density = 0.179 kg/m3). If the balloon is a sphere with a radius of 5.3 m, what is the maximum weight it can lift
A 965-kg satellite orbits the Earth at a constant altitude of 94-km. What is the change in the system's kinetic energy
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