Magnitude of the force of repulsion
Two small spheres spaced 50.0 centimeters apart have equal charge. How many excess electrons must be present on each sphere if the magnitude of the force of repulsion between them is 4.40 x 10^{-21} newtons? Please explain.
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A police car is traveling east at 40.0 m/s along a straight road, overtaking a car ahead of it moving east at 30.0 m/s. The police car has a malfunctioning siren that is stuck at 1 000 Hz. What is the wavelength in front of the police car?
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The estimate of the slope is? The estimate of the y-intercept is? The prediction for the sales for a broker who brings in 25 clients is?
A die is rolled 24 independent times. Let Y be the sum of the 24 resulting values. Recalling that Y is a random variable of the discrete type approximate: (a) P(Y >= 86) (b) P(Y < 86) (c) P(70 < Y <= 86).
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Plot the maximum efficiency of a nuclear power plant as a function of the maximum allowable temperature in the reactor core.
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