Which equation should be used to calculate the speed of a wave?
speed = frequency x wavelength
speed = frequency x hertz
speed = period x wavelength
speed = period x hertz

Answer : The correct option is,

Speed = Frequency x Wavelength

Explanation :

Wave speed : It is defined as the speed at which a wave travels.

It is related to wavelength, frequency, and period.

The equations used are:

Speed = Frequency x Wavelength     ............(1)

As we know that,

So,

  .......(2)

The equation 1 and 2 are used to calculate the speed of wave.

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.