Question

1
9
27
f =
(1)
Where L= length of simple pendulum (swing) (or) L= distance between
point of suspension and center of gravity of the person on swing
Thus the length of simple pendulum (swing) decreases as the
person stands up on the swing l.e. the center of gravity of the person rises
up. The frequency of oscillation is inversely proportional to the square root
of the length of the pendulum (swing). So, frequency of oscillation
increases when a person stands on a swing instead of sitting on it.
Q7: Explain the difference between the speed of a transverse wave
travelling along a cord and the speed of a tiny colored part of the
cord.
Ans: Transverse waves are those in which particles of the medium vibrate
perpendicular (right angle) to the direction of propagation of wave motion.
Consider a cord having a coloured tiny part as shown in the
Coloured Point
V- -Speed​

Answer 1

Answer:

hfkfeusgjsfsuwgsihepebiwegehhiahehuagehey

Answer 2

Answer:

Nature is made of everything we see around us – trees, flowers, plants, animals, sky, mountains, forests and more. Human beings depend on nature to stay alive. Nature helps us breathe, gives us food, water, shelter, medicines, and clothes. We find many colors in nature which make the Earth beautiful.