An object with a mass of 0.8 kg is undergoing simple harmonic motion at the end of a vertical spring with a spring constant, k = 400 N/m. The object is observed to have a velocity of 0.3 m/s when passing through the equilibrium. a) State the general equation for displacement as a function of time for a simple harmonic
motion

b) Find the amplitude of the motion

c) Find the total energy of the object at any point of its motion​

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a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.

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