When tuning a guitar, by comparing the frequency of a string that is struck against a standard sound source (of known frequency), what does the one adjusting the tension in the string listen to?

Jack tries to place a magnet on the door of his refrigerator. He observes that the magnets don't stick. He guesses that the door of the refrigerator is made of non magnetic substance.

A physics demo launches a ball horizontally while dropping a second ball vertically at exactly the same time. 1) which ball hits the ground first?

What are the 2 major organizations that develop symbols for use throughout different engineering disciplines

In a generator, as the magnet spins, opposite poles of the magnet push the electrons in opposite directions. This back-and-forth movement of electrons is called what? A) revolutions per minute B) direct current C) alternating current.

Which of the following should a scalar measurement have? a. magnitude b. description c. direction d. unit

When two frequencies are added together, the beat frequency and the average frequency are an octave apart?

When sunlight strikes oil on the surface of water, a variety of colors are observed. What is the best explanation for this observation? A) Oil reflects the light and the lens of our eyes break it into component colors.

How is lifting a counterweight of a trebuchet considered doing work? Use the definition of work (W = Fd) in your description.

A pendulum takes. 5 seconds tp complete one cycle. what is the pendulum"s period and frequency?

Determine the answer to the equation 30 km/h * 17 h =