How deep in the ocean is the wreckage of the titanic?

When a 5.0kg cart undergoes a 2.2m/s increase in speed, what is the impulse of the cart

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Point charges q1 = 51 µc and q2 = −27 µc are placed 1.0 m apart, with q2 on the right. what is the force (in n) on a third charge q3 = 19 µc placed midway between q1 and q2? (assume the positive direction is to the right. indicate the direction with the sign of your answer.)