Question

what is the scientific study of propagation absorption and reflection of sound called
1.sound pressure
2.elastic modules
3. acoustics​

Answer 1

cot Otan (90°-0)- sec (90° - 0) cosec 0 + sin’65° + sin²25°

+ 3 tan 5º tan 45º tan 85º.

A piece of copper of mass 40g at 200°C is placed in a copper calorimeter of mass 60g containing 50g of water at 25°C. Ignoring heat losses, what will be the final temperature of the mixture.

(Specific heat capacity of copper= 0.4J/g/K, specific heat capacity of water= 4.2J/g/K )?

Please show workings.

Answer 2

Answer:

1) Sound pressure .

This is the correct answer of your question