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Q1. A beam of 6 MeV electrons passes through a 400 micro-meter thick silicon detector. Estimate the energy lost by the electrons when crossing 200 micro-meters, 300 micro-meters and the full thickness of the detector.
Q2. A 5.1 g bullet leaves the muzzle of a rifle with a speed of 328 m/s. What force (assumed constant) is exerted on the bullet as it is travelling down the 0.85 m long barrel of the rifle?
Q3. A skier of mass 67 kg is pulled up a slope by a motor-driven cable.
(a) How much work is required to pull him 90 m up a 60° slope (assumed frictionless) at a constant speed of 1.9 m/s?
(b) How what HP moted would be necessary.
A nonconducting ring of radius of 11.6 cm is uniformly charged with a total positive charge of 10.0 µC. find the magnitude of the magnetic field on the axis of the ring 5.00 cm from its center
A 1.83-kg solid sphere (radius = 0.141 m) is released from rest at the top of a ramp and allowed to roll without slipping. What is its rotational kinetic energy
In 2010, the men's record for the 26.22 miles Boston Marathon was 2 hours 5 minutes and 52 seconds. What was the average speed of the runner in units of m/s
A golf ball is hit at ground level. The ball is observed to reach its maximum height above ground level 3.8 s after being hit, How high is the fence
Two electrodes are placed in a calcium chloride solution and a potential difference is maintained between them. calculate the current in the solution
A glass bead has a total charge of +10 nC. A proton is located at a distance of 3 cm from the center of the glass bead. What is the direction of the force on the proton
A ball on a porch rolls 60cm to the porch's edge, drops 40cm, continues rolling on the grass, and eventually stops 80cm from the porch's edge. What is the magnitude of ball's total displacement, in centimeters.
Since the ends are open, the boundary conditions force the standing wave (representing the displacement of air molecules) that is produced in the bugle to have antinodes at the open ends of the bugle
In an experiment like you are going to do in Investigation 1 of lab this week, you count the number of beta rays from a 137Cs source. What is the average number of counts
An electric dipole has opposite charges of 5 x10^15 C separated by a distance of 0.4mm. find the potential energy of the dipole in the given position
A truck is traveling at 11.4 m/s down a hill when the brakes on all four wheels lock. How far does the truck skid before coming to a stop
A circus performer stretches a tightrope between two towers. He strikes one end of the rope and sends a wave along it toward the other tower. He notes that it takes the wave 0.675 s to reach the opposite tower, 20.0 m away. If a 1 meter length of ..
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