Physics
What is meant by noise pollution? Name one source of sound causing noise pollution.
Related Questions
The ratio of amplitude of two waves is 3 : 4. What is the ratio of their :
(i) loudness?
(ii) frequencies?
State two ways by which the frequency of transverse vibrations of a stretched string can be increased.
The V-I graph for a series combination and for a parallel combination of two resistors is shown in the figure below. Which of the two A or B, represents the parallel combination? Give a reason for your answer.
A music system draws a current of 400 mA when connected to a 12 V battery.
(i) What is the resistance of the music system?
(ii) The music system is left playing for several hours and finally the battery voltage drops and the music system stops playing when the current drops to 320 mA. At what battery voltage does the music system stop playing?