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.
A nozzle is now attached to the end of the hose. If the nozzle diameter is one-third the diameter of the hose, what is the speed of the water leaving the nozzle? ___m/s
Steam is now heated until its volume is 5m3 and its pressure is 300kPa. Determine the heat transferred to and the word produced by the steam during this process.
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.
Tim and Rick both can run at speed vr and walk at speed vw , with vr>vw . They set off together on a journey of distance D . Rick walks half of the distance and runs the other half. Tim walks half of the time and runs the other half.
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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