(1) When you rub a balloon on your hair, electrons move from your hair onto the balloon. (a) After rubbing the balloon on your head, the balloon is having a charge of -0.3 uc, determine how many electrons have been transferred from your head to the balloon.

(b) When the balloon possesses electric charge of -0.3 uc, state the amount of charge your head possesses. Explain your answer.

I have no idea on this topic, could anyone help me? I still had no idea on what my teacher was saying while on full focus mode. I'm pretty sure he did not say anything about the uc thing

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.