How does a new hypothesis replace an older explanation of something in the natural world? To understand this let us look at one of the classical example of geocentric theory and heliocentric theory. The geocentric theory states the Earth is at the centre of the solar system and the Sun, Moon, and all the other planets revolve around it. This ancient theory failed to explain the phenomenon like the phases of Moon, solar eclipse and lunar eclipse. The modern heliocentric theory which states that the Sun is at the centre of solar system, and all the planets including the Earth revolve around it. This theory was able to explain all the phenomenons unlike the geocentric theory. Hence the heliocentric theory replaced the geocentric theory.
The element has 7 protons and 9 neutrons.
Have a nice day! :)
D. Electromagnetic waves
<span><span> Generally, Electromagnetic waves consist of both electric and magnetic field waves. These waves oscillate in perpendicular planes with respect to each other, and are in phase.</span><span>The creation of all electromagnetic waves usually begins with a charged particle, which creates oscillating electric and magnetic fields.</span><span>Once they are in motion, the electric and magnetic fields that are charged in particles creates are self-perpetuating: time-dependent change in one field (electric or magnetic) to produce the other.</span></span>
