Posted by **Aimee** on Friday, May 27, 2011 at 12:55am.

Log functions:

A new car has an interior sound level of 70 dB at 50 km h. A second car, at the

same speed, has an interior sound level that is two times more intense than that

of the new car. Calculate the sound level inside the second car.

- Math -
**Henry**, Saturday, May 28, 2011 at 3:55pm
NEW CAR:

10LogN = 70db,

Divide boh sides by 10:

LogN = 7,

N = 10^7.

2ND CAR:

N = 2*10^7,

10Log(2*10^7) = 10*(0.3010+7) = 73db.

## Answer This Question

## Related Questions

- Functions - Problem solving with logarithmic functions: A new car has an ...
- physics - sound level - The source of a sound wave has a power of 2.50 µW. ...
- Physics - As measured from centre ice, a single wildly cheering hockey fan can ...
- LOGS - The decibel level of a sound is given by dB=10log(EE0), where E0=10−...
- STUPID PHYSICS - As measured from centre ice, a single wildly cheering hockey ...
- Grade 12 Advanced Functions Math - Hello! Can someone please help me out for ...
- physics - From a vantage point very close to the track at a stock car race, you ...
- physics - 1)As a sound source moves away from a stationary observer, the number ...
- physics - 1)As a sound source moves away from a stationary observer, the number ...
- physics - 1)As a sound source moves away from a stationary observer, the number ...

More Related Questions