3 years ago

What is the uses of echoes?

1 answer:

8 0

Explanation:

Echo sounding is a type of sonar used to determine the depth of water by transmitting sound waves into water. The time interval between emission and return of a pulse is recorded, which is used to determine the depth of water along with the speed of sound in water at the time.

You might be interested in

Naphthalene combustion can be used to calibrate the heat capacity of a bomb calorimeter. the heat of combustion of naphthalene i

barxatty [35]

My namer js gpvjt ahsdhhsdbdb

6 0

4 years ago

What is the mass of a person who weighs 653 N at earths surface

miss Akunina [59]

Answer:

66.6 kg

Explanation:

The weight of a person at Earth's surface is given by

$W=mg$

where

m is the mass of the person

$g=9.8 m/s^2$ is the acceleration of gravity

The person in the problem has a weight of

W = 653 N

Therefore, we can rearrange the equation to find his mass:

$m=\frac{W}{g}=\frac{653}{9.8}=66.6 kg$

7 0

4 years ago

What is the intensity of a sound with a measured intensity level of 84 db? (i0 = 10-12 w/m2)?

Ivahew [28]

The unit measurement for sound can be expressed in terms of intensity and in decibels. The intensity of sound is the measure of its power over unit area. The common unit of measurement is in decibels. This is commonly used in measuring the extent of noise. The conversion from intensity to the decibel unit is through logarithmic function. The formula is:

dB = 10 log(I/I0), where I0 is 10^-12 Watts per square meter

Substituting the values to the equation,

84 = 10log(I/10^-12)
I = 0.0002512 W/m2

In scientific notation the intensity is 2.512 x 10^-4 W/m^2.

7 0

4 years ago

If you see that a hot-air balloon is rising above the top of a hill, what is the top of the hill called? A. delta point B. dista

MrRissso [65]

The answer is reference point.

5 0

3 years ago

Read 2 more answers

Please help with my finals

allsm [11]

the answer is the speed of blue ball after collision is 2.6v

6 0