Question

d) Rotation of earth around itself is called a periodic motion give scientific reason​

Answer 1

Answer:

All oscillatory motions are said to be periodic motion because each oscillation is completed in a fixed interval of time. All the oscillatory motions are not periodic such as the revolution of the earth is periodic but not an oscillatory motion.

Answer 2

Explanation:

1.2cm.

(Angle of a rectangle)

By Pythagoras thearam

BD² = BC ² + = 35²+

BD2= 1225 + 144

BD