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7) Suppose a mangetic field of 7.45 mT is pointing into a piece of paper and then we shoot a small charged metal ball, 4.8 grams and +1.52 uC, from left to right at a speed of 1200 m/s.
a) What is the magnitude and direction of the force on the particle? If this particle were to bend into a circular path in the field, how large is the circle's radius and is the path clockwise or counterclockwise?
b) Now repeat parts a and b but with an electron instead of a metal ball.
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Two 1.5cm -diameter disks face each other, 1.1mm apart. They are charged to ±20nC. What is the electric field strength between the disks
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A student drops two metallic objects into a 120-g steel container holding 150 g of water at 25°C. One object is a 230-g cube of copper that is initially at 85°C, What is the mass of the aluminum chunk
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