The average power and intensity level of a horn’s sound

Reference no: EM1312565

Question 1. Find the difference in decibel levels β1 & β2 of a sound source is related to the ratio of its distances r1 & r2 from the receiver by the formula

Question 2. A train sounds its horn as it approaches an intersection. The horn can just be heard at a level of 50dB by an observer 10 km away.
(A) Find the average power generated by the horn?
(B) What intensity level of the horn’s sound is observed by someone waiting at an intersection 50m from the train?

Reference no: EM1312565

Questions Cloud

The mass of a ball and speed of a puck after collision : Compute the mass of a ball and speed of a puck after collision.

Computing the takeoff speed and kinetic energy : Computing the kinetic energy, takeoff speed, and kinetic energy per kilogram.

Newton’s third law : The famous horse & cart physics scenario is explained. This scenario is used to describe why many people have a common misconception about what Newton’s 3rd Law says & does not say.

Velocity of the objects in terms of air resistance : Explain the velocity of two different objects: heavy rock & light feather. 1st, describe what happens when the two objects are dropped on Earth. 2nd, compare this to what happens on the Moon.

The average power and intensity level of a horn’s sound : Find the difference in decibel levels β1 & β2 of a sound source is related to the ratio of its distances r1 & r2 and find the average power generated by the horn.

Hire a man crew members : Suppose the owner of the trawler can sell al the fish caught for $75 every 100 pounds also can hire a man crew members as desired by paying them $150 every week.

Taiwans government hoped would emerge in its epzs : Illustrate what is the "incubator effect" that Taiwan's government hoped would emerge in its EPZs.

Intermediaries come from a competitive marketplace : change if buyers pay $8 every unit to the intermediary but sellers offer to rebate part of that expense to buyers.

The location at which the tuning is formed : Determine the location at which the tuning is formed and the vibrating frequency of a string to form a standing wave pattern.

User Account

All Pages