Ask question

Ask question

All categories

3 years ago

7

A tunnel under a river is 2.00 km long. (a) At what frequencies can the air in the tunnel resonate? (b) Explain whether it would

be good to make a rule against blowing your car horn when you are in the tunnel.

1 answer:

Damm [24]3 years ago

7 0

Answer:

nine

Explanation:

cuz

You might be interested in

How is water introduced into rivers and streams?

mafiozo [28]

Rain fall which is called run off

3 0

3 years ago

Read 2 more answers

When many atoms are split in a chain reaction, a large explosion occurs. This is an example of what type of energy conversion? (

VMariaS [17]

The second option is correct

6 0

3 years ago

Read 2 more answers

A 12.0-kilogram object is lifted from the ground to a height of 4.00 meters.

kow [346]

Answer:

3 j

Explanation:

12.0 kilo / 4.00 meters = 3 j

4 0

2 years ago

Pls help answer embed <br>

Savatey [412]

Answer:

C = 1.01

Explanation:

Given that,

Mass, m = 75 kg

The terminal velocity of the mass, $v_t=60\ m/s$

Area of cross section, $A=0.33\ m^2$

We need to find the drag coefficient. At terminal velocity, the weight is balanced by the drag on the object. So,

Weight of the object = drag force

R = W

or

$\dfrac{1}{2}\rho CAv_t^2=mg$

Where

$\rho$ is the density of air = 1.225 kg/m³

C is drag coefficient

So,

$C=\dfrac{2mg}{\rho Av_t^2}\\\\C=\dfrac{2\times 75\times 9.8}{1.225\times 0.33\times (60)^2}\\\\C=1.01$

So, the drag coefficient is 1.01.

5 0

3 years ago

Fill in the blank .Technically color consists of electromagnetic _____

8_murik_8 [283]

Electromagnetic radiation

5 0

3 years ago