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Zanzabum
3 years ago
5

A rectangular tank is filled with water to a depth of 4m. Calculate the pressure at the bottom of the tank. PLEASEEE HELP!!

Physics
2 answers:
liq [111]3 years ago
8 0

Answer:

P = ρgh  

P = (1000 kg/m³)(9.8 m/s²)(4 m)

<em>P = 39200 Pa </em>

Explanation:

In the case of the water stored in a tank, the pressure at its bottom is the weight acting on a unit area of the surface where the tank is kept. To turn that into an equation: Pressure = weight/area, and weight = mass (m) * acceleration due to gravity (g). This means pressure = m * g/ area

Paul [167]3 years ago
4 0

The pressure in a liquid at a given depth is called the hydrostatic pressure. This can be calculated using the hydrostatic equation:

P = ρgh

P = (1000 kg/m³)(9.8 m/s²)(4 m)

<h2>P = 39200 Pa</h2>

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On a hike, you travel 2800 m in 2 h. What is your average speed?
Marina86 [1]
<h2>Greetings!</h2>

Firstly, to find speed you need to remember the speed formula:

Speed = Distance ÷ Time

You can do it by doing 2800 ÷ 2 but that gives m/h (metres per hour)

So to convert hours into seconds, you multiply 2 by 7200 (amount of second in 2 hours:

2 * 7200 = 14400 seconds

Now we can do distance ÷ time by plugging the values in:

2800 ÷ 14400 = \frac{7}{36} ≈0.194

<h3>So the average speed is 0.194m/s (metres per second) </h3><h3 /><h2>Hope this helps!</h2>
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3 years ago
What is Metabolism?
attashe74 [19]
"<span>The process by which your body converts food into energy", sounds more accurate.

"</span><span>The amount of potential energy contained in food", is basically a long way of saying - Calories.

So, I would go with the one that talks about the process of converting food to energy.</span>
7 0
4 years ago
WIL GIVE BRAINLISEST PLEASE HELP SPEED ACCELERATION GRAPHS LABEL THE GRAPHS PLEASEEeeee
Varvara68 [4.7K]

Answer:

Take the numbers and fill them in graph.

Plot time as X and speed as Y and afterward join then like a line graph.

4 0
3 years ago
A 1.20 m wire has a mass of 6.80 g and is under a tension of 120 N. The wire is held rigidly at both ends and set into oscillati
swat32

Answer:

145.52137 m/s

1.4 m

0.7 m

60.6339 Hz

121.2678 Hz

Explanation:

T = Tension = 120 N

\mu = Linear density  = \frac{m}{L}

m = Mass of wire = 6.8 g

L = Length of wire = 1.2 m

n = Number of loops

Velocity is given by

v=\sqrt{\frac{T}{\mu}}\\\Rightarrow v=\sqrt{\frac{T}{\frac{m}{L}}}\\\Rightarrow v=\sqrt{\frac{120}{\frac{6.8\times 10^{-3}}{1.2}}}\\\Rightarrow v=145.52137\ m/s

The speed of waves on the wire is 145.52137 m/s

Wavelength is given by

\lambda=\frac{2L}{n}\\\Rightarrow \lambda=\frac{2\times 1.2}{1}\\\Rightarrow \lambda=1.4\ m

The wavelength of the waves that produces one-loop standing waves is 1.4 m

\lambda=\frac{2L}{n}\\\Rightarrow \lambda=\frac{2\times 1.2}{2}\\\Rightarrow \lambda=0.7\ m

The wavelength of the waves that produces two-loop standing waves is 0.7 m

Frequency is given by

f=\frac{nv}{2L}\\\Rightarrow f=\frac{1\times 145.52137}{2\times 1.2}\\\Rightarrow f=60.6339\ Hz

The frequency of the waves that produces one-loop standing waves is 60.6339 Hz

f=\frac{nv}{2L}\\\Rightarrow f=\frac{2\times 145.52137}{2\times 1.2}\\\Rightarrow f=121.2678\ Hz

The frequency of the waves that produces two-loop standing waves is 121.2678 Hz

4 0
3 years ago
Do you think it is possible to determine an object is moving towards you, or moving away from you just by how it sounds? If
Nataly_w [17]

Answer:

I think so

Explanation:

When the object is moving towards you the sound gets louder but when it's moving away it sounds farther away.

6 0
3 years ago
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