### Assuming that the temperature of the bullet

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Q. In a particular region there is a uniform current density of 17 A/m2 in the positive z direction. What is the value of line intBvec·dsvec when that line integral is calculated along the three straight-line segments from (x, y, z) coordinates (4d, 0, 0) to (4d, 3d, 0) to (0, 0,0) to (4d, 0, 0), where d = 40 cm?

Q. A 60 g bullet traveling at 230 m/s penetrates a block of ice at 0°C and comes to rest within the ice. Assuming that the temperature of the bullet doesn't change appreciably, how much ice is melted as a result of the collision?

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