A3.7kg block on a horizontal frictionless surface is attached to a spring whose force constant is 450 n/m. the block is pulled from equilibrium position at x=0m to a displacement x=+0.080m and is released from rest. the block then executes simple harmonic motion along the x-axis. the maximum elastic potential energy of the system is closest to? ( 1.4 j) i just need to understand how to get there. show the equations used

We will use a video to study faraday’s law of electromagnetic induction by analyzing the induction that occurs due a coil of copper wire sliding along an air track that passes through an external magnetic field. specifically, we will: examine some of the main principles behind faraday’s law. apply lenz’s law to determine the direction of the induced emf. take measurements of the induced emf from the voltmeter as the coil passes into and out of the external magnetic field. use the horizontal scale provided to determine the speed of the coil. calculate the magnetic field induced in the coil as it passes into and out of the external magnetic field.