Apitch of middle d (first harmonic = 294 hz) is sounded out by a vibrating guitar string. the length of the string is 70.0 cm. calculate the speed of the standing wave in the guitar string. a frequency of the first harmonic is 587 hz (pitch of d5) is sounded out by a vibrating guitar string. the speed of the wave is 600 m/sec. find the length of the string.

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.