A siren creates a sound level of `60 H_(Z)` at a location `500 m` from the speaker. The siren is powered by a batter that delivers a total energy of `1.0 kJ`. Assuming that the efficiency of siren is `30%` , determine the total time the siren can sound.

A siren creates a sound level of 60 dB at a location 500 m from the speaker. The siren is powered by a batter that delivers a total energy of 1.0 kJ . Assuming that the efficiency of siren is 30% , determine the total time the siren can sound.

A siren emitting sound of frequency 500 Hz is going away from a static listener with a speed of 50 m / sec . The frequency of sound to be heard, directly from the siren, is

How much metres can a 50 kg man climbs by using the energy from a slice of a bread which produces 420 kJ heat? Assuming that the human body effciency working is 30% . Use g=10 m//s^(2) .

A listener is at rest and a police siren is moving away from the listerner at 60m/s. what frequency does the listerner hear given that the velocity of sound in air is 340m/s and frequency os siren is 500Hz?

A listener is at rest and a police siren is moving away from the listerner at 60m/s. what frequency does the listerner hear given that the velocity of sound in air is 340m/s and frequency os siren is 500Hz?

Standing at a crosswalk, you hear a frequency of 560 Hz from the siren of an approaching ambulance, After the ambulance passes, the observed frequency of the siren is 480 Hz. Determine the ambulance's speed from these observations. Speed of sound =343(m)/(s) .

Standing at a crosswalk, you hear a frequency of 560 Hz from the siren of an approaching ambulance, After the ambulance passes, the observed frequency of the siren is 480 Hz. Determine the ambulance's speed from these observations. Speed of sound =343(m)/(s) .

A siren emitting a sound of frequency 1000 H_(Z) moves away from you towards a cliff at a speed of 10 m//s . (a) What is the frequency of the sound you hear coming directly from the sirven ? (b) What is the frequency of sounds you hear reflected off the cliffb ? (c) What beat frequency would you hear ? Take the speed of sound in air as 330 m//s .

A siren emitting a sound of frequency 1000 H_(Z) moves away from you towards a cliff at a speed of 10 m//s . (a) What is the frequency of the sounds, you hear coming directly from the sirven ? (b) What is the frequency of sounds you hear reflected off the cliff . Speed of sound in air is 330 m//s ?