Ask question

Ask question

All categories

KonstantinChe [14]

3 years ago

8

How sound is transmitted through the water

1 answer:

photoshop1234 [79]3 years ago

3 0

Explanation:

When your head is submerged your skull also vibrates with the sound because it is close to the same density and elasticity as water. Below the surface sound wave pass directly through water and into your head. And above the surface the sound waves only vibrates your ear drum unless the sound is very loud.

You might be interested in

The source of most of rhe energy we use today is

allsm [11]

Your answer should be A. Fossil Fuels. Hope this helps! =^-^= (Brainliest would be appreciated!)

3 0

3 years ago

Read 2 more answers

A 3.5 kW drill transfers 5 000 kJ of kinetic energy during 15 seconds of use. What is the percentage efficiency of the drill?

Marizza181 [45]

Answer:

1.04%

Explanation:

Given that,

The power of drill = 3.5 kW = 3500 W

Transferred kinetic energy = 5000 kJ during 15 seconds of use.

We need to find the percentage efficiency of the drill. It can be given by :

$\eta=\dfrac{P_o}{P_i}\times 100$

Where

Po and Pi are output and input powers.

$P_o=\dfrac{5000\times 10^3}{15}\\\\=3.34\times 10^5\ W$

So,

$\eta=\dfrac{3500}{3.34\times10^{5}}\times100\\\\=1.04\%$

So, the percentage efficiency of the drill is 1.04%.

4 0

3 years ago

If a car used 260,000 W of power to complete a race in 15 s, how much work did the car do?

suter [353]

Answer: 3.9 MW

Explanation:

1 W = 1 J/s

260000 J/s (15 s) = 3,900,000 = 3.9 MW

3 0

3 years ago

Rama09 [41]

Answer:

d

Explanation:

6 0

4 years ago

Read 2 more answers

How much work is done if a 4500 N piano is lifted 10 m?

AveGali [126]

Answer:

45000 J

Explanation: multiply the 4500 N by the 10 m

6 0

3 years ago