Question

What are the different means by which hinfection diseases spread ?
2. What are vectors? Gice two examples.
3. List the points of homogenous and heterogeneous mixture.
4. State the Newton's Third Law of motion.​

Answer 1

Question and Answer:-

1. What are the different means by which infection diseases spread?

Infectious diseases commonly spread through the direct transfer of bacteria, viruses or other germs from one person to another. This can happen when an individual with the bacterium or virus touches, kisses, or coughs or sneezes on someone who isn't infected.

2. What are vectors?

A vector is a quantity or phenomenon that has two independent properties: magnitude and direction. The term also denotes the mathematical or geometrical representation of such a quantity. Examples of vectors in nature are velocity, momentum, force, electromagnetic fields, and weight.

3 . List the points of Homogeneous and Heterogeneous mixture.

HOMOGENEOUS:

• They have uniform compositions
• The components of homogeneous mixtures are not physically distinct.
• They have no visible boundaries of separation between the constituents
• Examples: Alloys, Solution of salts in water etc.

HETEROGENEOUS:

• They have non-uniform compositions.
• A heterogeneous mixture has physically distinct components.
• They have visible boundaries of separation between the constituents.

• Examples: Mixture of sand and common salt, Mixture of sand and water etc.

4. State the Newton's 3rd Law of motion.

Newton's third law states that when two bodies interact, they apply forces to one another that are equal in magnitude and opposite in direction. The third law is also known as the law of action and reaction. ... According to the third law, the table applies an equal and opposite force to the book.

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