15 pts wants to calculate the speed at which a sound wave is traveling. she knows that the frequency of the wave is 680 hertz and that the wave has a wavelength of 0.5 meters.
what is the speed of the sound wave?
in m/s

According to the tide table below what time of day will the highest tide occur?

An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have

The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.