Which feature of a wave can be calculated using the formula below? number of wavelengths / time wavelength speed frequency amplitude

Frequency

Explanation:

If you are at the beach, you may see six waves go past you in half a minute.

An hour later, you see only three waves in the same time.

You would say that the frequency of the waves has decreased.

A is wrong. Wavelength is the distance between one wave and the next.

B is wrong. Speed is a measure of how fast the waves are travelling.

D is wrong. Amplitude is the height of a wave from its resting position (half the distance from a peak to a trough).

the tides are influenced by both the moon and the sun, it's easy to see that when the sun lines up with the moon and the earth, as during a new moon or full moon, the tidal effect is increased. these are known as spring tides, named not for the season, but for the fact that the water "springs" higher than normal. on the other hand, if the sun and the moon are 90 degrees apart in relation to an observer on earth as during the first quarter moon or third quarter moon, then high tides are not as high as they normally would be. this is because despite its greater distance, the sun's mass allows it to exert enough gravitational force on the oceans that it can negate some of the effects of the moon's pull. this phenomenon of lower high tides is called a neap tide. if you need more information on this topic visit moonconnection.com.

c (diamond),

sio2 (quartz)