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Setler79 [48]
2 years ago
14

Someone pls help fast

Physics
2 answers:
Helen [10]2 years ago
5 0
I think u forgot to add the question please add the question
Kruka [31]2 years ago
4 0
<h3>You forgot to add question...Add questions before asking so we can help</h3>
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PLEASE HELP!!!!
Aleks [24]
The answer is step by step 65
4 0
3 years ago
Read 2 more answers
During typical urination, a man releases about 400 mL of urine in about 30 seconds through the urethra, which we can model as a
gregori [183]

Answer:

Explanation:

Given:

volume of urine discharged, V=400~mL=0.4~L=4\times 10^{-4}~m^3

time taken for the discharge, t=30~s

diameter of cylindrical urethra, d=4\times10^{-3}~m

length of cylindrical urethra, l=0.2~m

density of urine, \rho=1000~kg/m^3

a)

we have volume flow rate Q:

Q=A.v & Q=\frac{V}{t}

where:

A= cross-sectional area of urethra

v= velocity of flow

A.v=\frac{V}{t}

\frac{\pi d^2}{4}\times v=\frac{4\times 10^{-4}}{30}

v=\frac{4\times4\times 10^{-4}}{30\times \pi (4\times 10^{-3})^2}

v=1.06~m/s

b)

The pressure required when the fluid is released at the same height as the bladder and that the fluid is at rest in the bladder:

P=\rho.g.l

P=1000\times 9.8\times 0.2

P=1960~Pa

5 0
3 years ago
An insoluble solid material that is produced in double replacement reactions is called
lina2011 [118]

Answer:

Precipitate

Explanation:

When a double displacement reaction occurs, the cations and anions switch partners, resulting in the formation of two new ionic compounds AD and CB, one of products is in the solid state and forms an insoluble ionic compound called a precipitate.

4 0
3 years ago
A girl of weight 600N sits on a 3-leg chair which weighs 60N. Each chair leg presses the floor in a circle with a diameter of 5c
Daniel [21]
Pressure = total force/total area

Total force = 660 Newton's

Total area:

Each leg contacts the floor with an area of πr^2=π(0.025m)^2=0.002m^2.

Total contact area for all 3 legs = 0.006 m^2.

Pressure = (660N) / (0.006 m^2)

= 110,000 N/m^2 = 110,000 Pascal's.

8 0
3 years ago
Acceleration is the rate at which happens
EastWind [94]
Velocity and time inceases
4 0
3 years ago
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