A wave in the ocean has a wavelength of 2 m and frequency of 0.5 Hz. What is the speed of this wave?

Pretty sure it's Definition of wave speed and how it is related to wavelength and wave frequency, how to calculate wave speed and how it is related to the medium of a wave.

Explanation:

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.  

bcde is the incorrect answer it is a