The frequencies of light that an atom can emit are dependent on states the electrons can be in. When excited, an electron moves to a higher energy level or orbital. When the electron falls back to its ground level the light is emitted.
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Answer:
Option A.
Explanation:
The correct answer is Option A.
The car uses energy to move.
A car is a machine that converts energy locked in fuel like petrol or diesel and turn it into mechanical energy.
The energy produced from the combustion of gasoline is then used to move the shaft, which sends the power to the rear axle and the wheel starts to move.
Answer:
Uranus and Neptune
Explanation:
The planets beyond Earth are called Giant planets. The other name of the Giant planets is Jovian planets they are, Jupiter, Saturn, Uranus and Neptune.
It is believed that the planets Jupiter and Saturn consist of a solid core and the rest of the mass is in liquid or gaseous form so, they are called gas giants.
The planets Uranus and Neptune have the gases solidified in the form of ice. All the Jovian planets consist of majority hydrogen gas and helium gas.
The planets Uranus and Neptune have the highest proportions of hydrogen compounds
The momentum of a neutron p = 586.25 kg m / s.
<u>Explanation:</u>
The product of mass and the velocity gives the momentum of an object and it is a vector quantity. It is denoted by the letter p. The unit of momentum is kilogram meter per second (or) kg m / s.
Given mass m = 1.675 10, velocity v = 3.500 10
Momentum, p = mv
where m represents the mass,
v represents the velocity.
momentum p = (1.675 10) (3.500 10)
momentum p = 586.25 kg m / s.
Lenz's Law: The polarity of the induced emf is such that it produces a current whose magnetic field opposes the change in magnetic flux through the loop.