Question

1. Make a list of at least 3 examples of kinetic energy that you experience in your everyday life AND at least 3 examples of potential energy that you experience in your everyday life. Be prepared to submit your list at the start of class.
2. Look up what it means mathematically for two variables to be directly related and what it means for two variables to be indirectly related.

• List two real-world equations (not necessarily chemistry-related) which show a direct relationship
• List two real-world equations which show an indirect relationship
• If the equations have more than 2 variables in them, be sure to indicate which specific variables are directly or indirectly related to one another
• Cite your source for the equations

Answer 1

Kinetic energy is the energy possessed by abody due to its motion. Three examples of Kinetic energy are:

1 A moving bus possesse K.E

2. A flying bird also possess K.E

3. The running water in stream

Potential energy (P.E) is the energy possessed by abody due to its position.

1. The book on a shelf in liberary possess P.E.

2. The water in a tanky on first floor possess K.E

3. An Apple on a tree also possess P.E

(2) Direct Inverse relation

Suppose A is directly related to B and Inversly related to C it can shown mathemeticaly as

A α B

A α 1 / C

If B INCREASE A will also INCREASE and if B DECREASES A will also DECREASES.

If C INCREASE A will DECREASE and if C DECREASES A will INCREASE.

(3) Two direct relations

K.E = 1/ 2 mv²

The K,E is directly related to mass and square of velocity.

Molarity = No. of moles / Volume in liters

Molarity is directly related to no. of moles and indirectly relted to volume

Two indirect relations

Gravitational force = G M1M2 / r²

Gravitational frce is indirectly related to the square of ditance (r) between the two bodies and directly related to their masses.

V = T / P

Volume of a gas (V) is indirectly related pressure and directly related to Temperature.

Source physics and chemistry text book of class 9th and 11th