When sweat evaporates from your skin the temp of your skin decreases this is because

The volume flow rate of blood leaving the heart to circulate throughout the body is about 5 L/min for a person at rest. All this

skelet666 [1.2K]

Answer:

$n=2.9\times 10^9$

$A=1.88\times 10^{-8}\ m^2$

Explanation:

Given that

Q= 5 L/min

1 L = 10⁻³ m³/s

1 min = 60 s

Q=0.083 x 10⁻³ m³/s

d= 6 μm

v= 1 mm/s

So the discharge flow through one tube

q = A v

$A=\dfrac{\pi}{4}d^2$

$A=\dfrac{\pi}{4}\times (6\times 10^{-6})^2\ m^2$

A=2.8 x 10⁻¹¹ m²

v= 1 x 10⁻³ m/s

q= 2.8 x 10⁻¹⁴ m³/s

Lets take total number of tube is n

Q= n q

n=Q/q

$n=\dfrac{0.083\times 10^{-3} }{ 2.8\times 10^{-14}}$

$n=2.9\times 10^9$

Surface area A

A= π d L

$A=\pi \times 6\times 10^{-6}\times 10^{-3}\ m^2$

$A=1.88\times 10^{-8}\ m^2$

7 0

3 years ago

If the horse lifts a 50 kilogram mass a vertical distance of 3 meters in 2 seconds, what is the horse’s minimum power output?

yaroslaw [1]

Answer:

735watts

Explanation:

Power = Force*distance/time

Given

Force = mg = 50 * 9.8'

Force = 490N

distance = 3m

time = 2s

Substitute

Power = 490*3/2

Power = 1470/2

Power = 735Watts

Hence the minimum power output is 735watts

7 0

3 years ago

(GIVING BRAINLIST)

Leviafan [203]

Answer:

C

Explanation:

During an investigation you want to investigate different variables.

5 0

3 years ago

As a United States citizen, the requirement to serve on juries if called upon is considered which of the following?

ratelena [41]

Answer:

if u are caught by the jews u die

Explanation:

7 0

3 years ago

Choose the correct definitions of speed, velocity, and acceleration. Check all that apply. Acceleration tells us in which direct

QveST [7]

We have thatThe options that define Speed, Velocity,Acceleration.

Speed is used to describe how fast the object is moving.

Acceleration is the rate of change of velocity in time.

Velocity is used to describe how fast the object is moving and tells us in which direction it is going.

Options

B,D,E

From the question we are told

Choose the correct definitions of speed, velocity, and acceleration. Check all that apply.

Acceleration tells us in which direction the object is going. Speed is the rate of change of velocity in time.
Acceleration is the rate of change of velocity in time.
Velocity is used to describe changes in the movement direction of the object. Acceleration tells us how far the object will go in a certain amount of time.
Velocity is used to describe how fast the object is moving and tells us in which direction it is going.
Speed is used to describe how fast the object is moving.
Velocity is the rate of change of speed in time.

Speed is used to describe how fast the object is moving and tells us in which direction it is going.

Generally

Acceleration is the rate of change of velocity in time.

Velocity is used to describe how fast the object is moving and tells us in which direction it is going.

Speed is used to describe how fast the object is moving without its direction in consideration

Hence

The options that define Speed, Velocity,Acceleration.

Speed is used to describe how fast the object is moving.

Acceleration is the rate of change of velocity in time.

Velocity is used to describe how fast the object is moving and tells us in which direction it is going.

Options

B,D,E

For more information on this visit

brainly.com/question/23379286

3 0

2 years ago