Explanation

Carbon has 4 electrons in its outer shell.

It forms 4 covalent bonds, making it tetravalent (valency = 4).

Explanation

Pressure formula is expressed as P = F/A,

• where P is pressure,
• F is force,
• and A is the area by which the force is applied perpendicularly.

Its SI unit of pressure is Pascal (represented as Pa) 

Definition of Pressure:

 Pressure can be defined as the force acting per unit area.

Explanation

Muscle is a type of tissue that contracts to produce movement.

The three main types of muscle tissues are skeletal, smooth, and cardiac.

Explanation

A strain is when a muscle is stretched too much and part of it tears.

It is also called a pulled muscle.

Explanation

Explanation

The energy equivalent of 1 atomic mass unit (a.m.u) is given by Einstein's mass-energy equivalence formula E = mc².

1 a.m.u = 931 MeV/c², so the energy equivalent is 931 MeV.

Explanation

An electric generator works on the principle of electromagnetic induction.

Faraday's law states that a changing magnetic flux induces an emf, which is the working principle of generators.

Explanation

A nucleotide, the basic unit of DNA, consists of a 5-carbon sugar (deoxyribose), a nitrogenous base, and a phosphate group.

These components link together to form the DNA's double-helix structure.

Explanation

Cations are positively charged ions. 

Cations are formed when a metal loses its electrons.

Explanation

In the Fahrenheit scale:

• The freezing point of water is 32°F
• The boiling point of water is 212°F