Based on the law of conservation of energy, how can we reasonably improve a machine’s ability to do work?

A.
Move the machine to a different gravitational field.
B.
Increase the friction between its moving parts.
C.
Reduce the friction between its moving parts.
D.
Redefine the machine’s system boundaries.

Write the correct abbreviation for each metric unit

An object dropped from cliff falls with a constant acceleration of 10 metre per second square find its speed of two seconds after it was dropped

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.