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A 3.00*10^2-eV electron and a 1.00*10^2-eV electron trapped in a uniform magnetic field move in circular paths in a plane perpendicular to the magnetic field. What is the ratio of the radii of their orbits?
q1. a 4 kg fish swimming 3 ms swallows an absent minded 2 kg fish at rest. what is the speed of the large fish
Use the uncertainty principle to estimate the size of an H atom and the energy of the ground state. Then, assuming some radius r, calculate the related uncertainty in momentum p to get the KE. Minimize the total energy to determine r and the ground..
A ball of mass m and another ball of mass 3m are placed inside a smooth metal tube with a massless spring compressed between them. With what speed does the lighter ball emerge from the other end
A wooden raft has a mass of 92kg. When empty it floats in water (density 1000 kg/m3) with 48 percent of its volume submerged. What mass of sand can be put on the raft without it sinking.
A thin film of glass (n = 1.48) floats on a liquid of n = 1.35 and is illuminated by light of ? = 600 nm incident from air above it. Find the minimum thickness of the glass
An ?-particle has a charge of +2e and a mass of 6.64 × 10-27 kg. It is accelerated from rest through a potential difference that has a value of 1.75 × 106 V, what are the radius of its circular path
A horse races once around a circular track in a time of 118s, with a speed of 17 m/s. What is the radius of the track? How do you go about solving this.
A ball falls straight down onto a wedge that is sitting on frictionless ice. The ball has a mass of 3.27 kg, and the wedge has a mass of 5.31 kg. what is the velocity of the wedge after the collision
One solenoid is centered inside another. The outer one has a length of 50.0 cm and contains 6750 coils, while the coaxial inner solenoid is 3.0 cm long and 0.120 cm in diameter, Find the emf induced in the inner solenoid
A small object begins a free-fall from a height of H = 87.0 m at t0 = 0 s. After %u03C4 = 2.20 s, At what height from the ground will the two objects first meet
A rock of mass 0.340 kg is spun horizontally at the end of a wire that is 1.00 m long and has a diameter of 1.00 mm. what is the Young's modulus of the wire
A daredevil on a motorcycle leaves the end of a ramp with a speed of 39.5 m/s, what is the maximum height that he reaches
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