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A thin wire of length L has a uniform charge density λ. The wire is bent into a semicircle with its center at the origin. The magnitude of the electric field at the center of the semicircle is 3 x 10+4 (in N/C). If L = 10.55 cm, what is the value of λ (in C/m)?
K = 9 x 10+9 N.m2.C-2 , ε0 = 8.85 x 10-12 C2.N-1.m-2
A smooth sphere of mass m moving with speed v on a smooth horizontal surface collides directly with a second sphere of the same size but of half the mass that is initially at rest. The coefficient of restitution is e. Show that the total kinetic e..
A train makes a round trip on a straight, level track. The first half of the trip is 300 km and is traveled at a speed of 75 km/h. What is the train average speed and average velocity
1)Suppose that you start with 2.52×1018 radioactive nuclei and 2.09 h later determine that only 8.14E17 nuclei of the substance remains. What is the half-life of this substance?
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 19.0 m/s at an angle 48.0 degrees; What is the time the ball is in the air
What is the difference between voltage current characteristics for intrinsic and extrinsic semiconductor in both forward in addition to reverse direction.
Explain how these principals connect to Einstein's theory of relativity or in modern applications in physics.
A circuit consists of a battery with a closed circuit, a terminal voltage of 12.0 V, and 1.0-?, 2.5-?, 5.0-?, and 7.5-? resistors connected in series, oriented as in figure a above, Calculate the total power dissipated by the load resistors
Determine the equation for the amplitude of W as a function of the speed, and determine the most unfavorable speed.
in a particular region of earths atmosphere the electric field above earths surface has been measured to be 140 nc
A 100-W resistance heater is connected to a 110-V doc source. What current flows through the heater
A 4.60 kg block of ice at 0°C is added to an insulated container partially filled with 11.6 kg of water at 15.0°C. Find the mass of the ice that was melted
An engine is used to lift a 2700 kg truck to a height of 3.0 mat constant speed. What is the efficiency of the engine
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