840J
3360J
3420J
4200J
7560J
Correct answer is E
No explanation has been provided for this answer.
Bell and piano
Guitar and flute
Trumpet and drum
Trumpet and flute
Violin and organ
Correct answer is D
No explanation has been provided for this answer.
Which of the following statements is correct about light and sound waves? Both
are longitudinal waves
are transverse waves
have the same velocity in air
need a medium for propagation
transmit energy
Correct answer is E
No explanation has been provided for this answer.
0.05s
1.00s
2.00s
3.14s
6.28s
Correct answer is B
No explanation has been provided for this answer.
Which of the following statements about a gas is NOT correct?
It has no definite shape
It is compressible
Its molecules are closely packed
Its molecules gain kinetic energy when heated
Its molecules move about randomly
Correct answer is C
No explanation has been provided for this answer.