What can be correctly concluded from this experiment? A sealed bottle containing bacterial cells and nutrients needed for cell growth is exposed to intense heat. It is then cooled. The bottle is not opened. Once the bottle has cooled, scientists note that even after several weeks, no bacteria growth occurs in the bottle.

1. New cells can only form from existing, living cells.
2. New cells can only form from nutrients if energy is provided.
3. New cells can only form in the presence of nutrients.
4. New cells can form from nonliving materials.

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.