Two point charges lie along the y-axis
Two point charges lie along the y-axis. A charge of q1 = -8.5 µC is at y = 6.0 m, and a charge of q2 = -7.5 µC is at y = -4.0 m. Locate the point (other than infinity) at which the total electric field is zero.
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At time t=0, a second is used to remove a gate blocking the tank exit. Will the exit flow be sufficient to start the tank moving? Assume the water flow is frictionless.
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Every year sixth-grade students in Ohio schools take proficiency tests. The list of sixth-grade reading score changes from the prior year are given below.
If np> and nq>5, estimate P(more than 4) with n=12 and p=0.7 by using the normal distribution as an approximation to the binomial distribution to the binomial; if np<5 or nq<5, then state that the normal approximation is not suitable.
A plant purifies its liquid waste and discharges the water into a local river. The EPA collects water specimens of the discharge of the plant and also water specimens in the river upstream from the plant.
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A small crystal of I2 is often used to clean the surface of the magnesium metal in the syntheses of Grignard reagents. Write a balanced chemical equation for the reaction of magnesium and molecular iodine.
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