A semi is traveling down the highway at a velocity of v = 27.5 m/s. The driver observes a wreck ahead, locks his brakes, and begins to slide. The truck has mass m and a coefficient of kinetic friction between the tires and the road of μk = 0.16. Write an expression for the sum of the forces in the x-direction for the truck while braking? Using the results from Part (a), input an expression for the truck's acceleration, at, while breaking?

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Q: 3. Three point charges are q, = -5.0 mC, q2 = -55 µC and q, = +70 pC are placed at the vertices of a...

A: q1 = -5 mC q2 = - 55 μC q3 = 70 μC side (d) = 0.25 m   

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.