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Which of the following does not produce a magnetic field:a. A constant current through a straight wireb. A charged particle following a circular pathc. A constant electric field between two charged platesd. A charged elementary particle with spin angular momentume. A sinusoidal electric field applied between two metal plates
One day the brakes fail just as the cable car leaves the top on its downward journey. What is the runaway car's speed at the bottom of the hill
A conducting bar rests on two parallel horizontal rails 50 cm apart forming a square area. The resistance of the bar and the rails is assumed to be constant and equal to 0.05 ??. What is the maximum value of the force acting on the bar during that ..
An old mining tunnel disappears into a hillside. You would like to know how long the tunnel is, but it's too dangerous to go inside. how far is it to the end of the tunnel
A ball fastened to one end of a 28 cm string and the other end is held fixed to a support. The ball whirls in a horizontal circle. Find the speed of the ball in its circular path
a projectile is fired with an initial velocity of 15 m/s at an angle of 37 degrees. At t=2 s, find the vertical and horizontal positions of the projectile
A charged capacitor is connected to an inductor. At time t=0 the charge on the capacitor is Q= 6uC. What is the amplitude of the current at that same instant
A ball rolls off a table with a horizontal velocity of 5 m/s If it takes 0.6 secs for it to reach the floor, What is the verticle componet of the balls velocity just before it hits the floor
Standing waves on a string are generated by oscillations having amplitude 0.005 m, angular frequency 942 rad/s, What is the equation of the standing wave
A 50g ball travelling at 25m/s is bounced off a brick wall and rebounds at 22m/s. A high speed camera records this event. If the ball is in contact with the wall for 3.5ms, what is the average acceleration of the ball throughout this time interval..
Two converging lenses having focal lengths of f1 = 11.1 cm and f2 = 20.0 cm are placed = 50.0 cm apart, How far to the left of the first lens should the object be positioned
In the winter, a thin film of ice (nice = 1.31) can form on a window (nglass = 1.50). Calculate the minimum thickness of the film
A playground is on the flat roof of a city school, 5 m above the street below (see figure). The vertical wall of the building is h = 6.50 m high, Find the speed at which the ball was launched
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