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The magnetic field of the earth at a certain location is directed vertically downward and has a magnitude of 50.0 µT. A proton is moving horizontally toward the west in this field with a speed of 6.00*106 m/s. What are the directions and magnitude of the magnetic force the field exerts on the proton?
A flat circular coil with 105 turns, a radius of 10-2 m, and a resistance of 0.480 Ω is exposed to an external magnetic field that is directed perpendicular to the plane of the coil. Evaluate the magnitude of the magnetic field at the center of the..
A solid block is attached to a spring scale. When the block is suspended in air, the scale reads 22.2N ; when it is completely immersed in water, What is the volume of the block
the electric field strength is 50000 nc inside a parallel-plate capacitor with a 2.0mm spacing. a proton is released
A girl is whirling a ball on a string around her head in ahorizontal plane. She wants to let go at precisely the right timeso that the ball will hit a target on the other side of the yard. When should she let go of the string
A 144-g cricket ball moving 28.0 m/s strikes a stationary 5.25-kg brick resting on small rollers so it moves without significant friction. What is the cricket ball's speed after the collision
A 94.00 water skier floating in a lake is pulled from rest to a speed of 10 in a distance of 24. What is the net force exerted on the skier, assuming his acceleration is constant.
In a piston cylinder assembly , the pressure and the tempreture of air are 200 KPa and the 500 c initially. The piston cross-sectional area is 0.2 m^2.The air is now cooled. what is the pressure in the cylinder
Occasionally, huge icebergs are found floating on the ocean's currents. Suppose one such iceberg is 125 km long, 32.6 km wide, and 159 m thick. (a) How much heat in joules would be required to melt this iceberg (assumed to be at 0 °C) into liquid ..
A meter stick is found to balance at the 49.7-cm mark when placed on a fulcrum. When a 53.0-gram mass is attached at the 27.0-cm mark, What is the mass of the meter stick
A lens that is "optically perfect" is still limited by diffraction effects. Suppose a lens has a diameter of 130mm, What is the linear width (diameter) of the central maximum at the focal distance of the lens
A 460 kg piano is being lowered into position by a crane while two people steady it with ropes pulling to the sides. Bob's rope pulls to the left, What is the tension in the main cable supporting the piano
answer the following questionsa explain qualitatively on the basis of domain picture the irreversibility in the
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