Science

Q1. What will be the effect on K.E.of a body if its speed is doubled ?
Ans1.According to the formula
K.E.=1/2mv square
Therefore if speed of body is doubled,K.E.will increase by four times.

Q2. Write the chemical formula of the following compounds.

A .Calcium Hydroxide.
B .Hydrochloric acid.
C. Sulfuric acid .

Answer:
Ca[OH]2
HCl
H2SO4

Q3.Describe the universal law of Gravitation.

Ans3. Any two bodies in the universe attract each other with a force which is
directly proportional to the product of their masses and inversely
proportional to the square of the distance between them is called law of Gravitation.

Next