A0.150 kg toy is undergoing shm on the end of a horizontal spring with force constant 300.0 n/m. when the object is 0.0120 m from its equilibrium position, it is observed to have a speed of 0.200 m/s. find(a) the total energy of the object at any point in its motion,(b) the amplitude of the motion, and(c) the maximum speed attained by the object during its motion.

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Your target variable is δf, the magnitude of the difference in frequency between the waves emitted from the sonar device and the waves received by the device after reflecting off the whale. write an expression for δf in terms of the relevant frequencies using the subscript notation introduced above.

When a vertical beam of light passes through a transparent medium, the rate at which its intensity i decreases is proportional to i(t), where t represents the thickness of the medium (in feet). in clear seawater, the intensity 3 feet below the surface is 25% of the initial intensity i0 of the incident beam. what is the intensity of the beam "10" feet below the surface? (give your answer in terms of i0. round any constants or coefficients to five decimal places.)