Answer:
(a)1.557 radian (b) 1.424 A
Explanation:
Frequency of oscillation of sound = 100 Hz
(a)The phase difference is given by 
where v is the velocity of sound in air
So phase difference 
as 
So phase difference 
(b) The resultant amplitude is given by 
Answer:
both proton and neutron are subatomic particle
Explanation:
hope this helps u stay safe
Answer:
Explanation:
From the question, we were made to understand that the collision between the two billiard balls was an elastic collision. Hence, an elastic collision is one in which the kinetic energy is conserved. Meaning the kinetic energy before the collision is still retained after the collision.
Kinetic energy before collision = kinetic energy after collision
1/2mv^2 = 1/2mv^2
There was no gain nor loss in energy
Answer: Yes
Air serves as a propagation medium.
Explanation:
Propagation of sound wave require a medium for transmission. Sound is produced by vibrating objects, The matter or substance through which sound is transmitted is called a medium. It can be solid, liquid or gas. Therefore to propagate sounds (human voice) from one end of a lecture hall to the other we need a propagation medium which is air. Air serves as a propagation medium.
