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A wave crest passes the boat every 4.0seconds. Calculate the frequency of the wave in hertz

A thermometer reading 18 F is brought into a room, the temperature of which is 70 F. one minute later the reading is 31 F. determine the temperature reading as a function of time.

A responder can protect himself/herself from radiation by using shielding as a response action. What materials are best for protecting against beta particles?

Consider a train moving at a constant velocity of 30 m/s. If the engines provide 4000 N of thrust, what is the frictional force acting on the train?

How does the magnetic field at a pole differ from the magnetic field in the middle of a magnet?

An object has an acceleration of 24 m/s/s. How long would it take the stationary object to reach a velocity of 6.8 m/s?

What is normal distribution in statistics?

Which of the following water samples would be considered acidic

A linearly-polarized electromagnetic (EM) wave has an electric field with amplitude 1000 V/m. You hold a a linear polarizer in front of it and rotate the polarizer so that all of the EM wave is blocked. You then rotate the polarizer 30 degree.

Let y'=4 x. find all values of r such that y = rx^{2} satisfies the differential equation. if there is more than one correct answer, enter your answers as a comma separated list.