A sound wave emitted by a speaker during demonstration has a frequency of 500 Hz. What is the period of this tone

Two vectors are shown. which statement best compares the vectors? vector x has greater magnitude than vector y. vector y has greater magnitude than vector x. the vectors have the same displacement. the vectors have the same direction.

If you place a magnet under a clear dish, and sprinkle iron fillings over it, above what part of the magnet will most of the fillings gather

How many neutrons does plutonium -196 with an atomic number of 78.