Question

h= 1/5 m
B= 2/5 m to ab area nikalo​

Answer 1

Step-by-step explanation:

1.Sound moves and spreads outward in all directions from the source as

waves by the process called ……………….

12.The controlling of echoes in a large room or building is called …………… 13.Sound travels about ………. times faster through water than it does

through air

14.The gravitational pull on an object by the earth is known as ………..

15.The device used to find whether an object is charged or uncharged is

…………..