Energy

Write short notes about induction break .

1.Induction Brake Basics: An induction brake, also known as regenerative braking, harnesses the electric motor's ability to act as a generator. When the driver applies the brakes, the electric motor switches its function from propulsion to generation, converting the kinetic energy of the vehicle into electrical energy.

2. Energy Conversion: During induction braking, the rotating wheels drive the motor, causing it to generate electricity. This electrical energy is then fed back into the...

What is meant by Fermi energy and Fermi energy level ?

Fermi energy refers to the highest energy level occupied by an electron at absolute zero temperature in a material. It is a concept from quantum mechanics and is named after the Italian physicist Enrico Fermi.

The Fermi energy level, also known as the Fermi level, is the energy level that separates filled electron states from empty states in a material. It serves as a reference point for describing the behavior of electrons in a material, particularly in metals and semiconductors. At absolute...

Define the following terms: Mass Defect , Packing Fraction & Binding Energy

1. Mass Defect: The mass defect refers to the difference between the mass of an atomic nucleus and the sum of the masses of its individual protons and neutrons. It arises from the conversion of mass to energy during the formation of the nucleus. The mass defect is responsible for the release of energy in nuclear reactions, as described by Einstein's famous equation E=mc².

2. Packing Fraction: The packing fraction is a measure of how tightly nucleons (protons and neutrons) are packed within an...

Why the capacitor stores energy but not charge??

First of all, let's know what really storing anything means. To store something implies there should be presence of some extra amount of it in them. Like same storage of energy or charge in any system implies the net charge or energy in the system is not equal to zero.

Now let's consider a parallel plate capacitor in which the plate connected to the positive terminal of a battery gets positive charge and induces same amount of negative charge on the another plate. So the total net charge...

1. Which of the following is correct expression of the first law of thermodynamics?a) q= ∆ H - Wb) ∆ H=q+Wc) ∆ U= q+ Wd) ∆ U= ∆ H +P ∆ V 2.The first law of thermodynamics fails to decide________...

1. Which of the following is correct expression of the first law of thermodynamics?

a) q=H - W

b)H=q+W

Explain why there are no photoelectrons emitted when the frequency of the incident light is less than 5.6 x 10¹⁴ Hz.(i) Calculate the work function for sodium. (ii)Use the graph to calculate the va...

When the frequency of the incident light is less than 5.6 x 10 Hz, no photoelectrons are emitted because the energy of the incident photons is less than the work function of sodium, and hence the electrons do not have enough energy to overcome the work function and be emitted.

(i) We can calculate the work function of sodium using the equation:

Energy of incident photon = work function + maximum kinetic energy of photoelectrons

At the threshold frequency, the maximum kinetic energy of...

The source of oxygen in photosynthesis is the water but not the carbon dioxide. Explain with reasons. Briefly describes the hill reaction.

In photosynthesis, the source of oxygen is indeed water, but carbon dioxide (CO2) also plays a crucial role, the process and clarify the relationship between water and carbon dioxide in photosynthesis.

Photosynthesis is the biochemical process by which green plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose. It occurs in the chloroplasts of plant cells, specifically in the thylakoid membranes.

During the light-dependent reactions of...