Flexibility is earned through regular _____ and _____

A hot-water stream at 80 ℃ enters a mixing chamber with a mass flow rate of 0.5 kg/s where it is mixed with a stream of cold wat

rewona [7]

Answer:

$\dot{m_{2}}=0.865 kg/s$

Explanation:

$\dot{m_1}= 0.5kg/s$

from steam tables , at 250 kPa, and at

T₁ = 80⁰C ⇒ h₁ = 335.02 kJ/kg

T₂ = 20⁰C⇒ h₂ = 83.915 kJ/kg

T₃ = 42⁰C ⇒ h₃ = 175.90 kJ/kg

we know

$\dot{m_{in}}=\dot{m_{out}}$

$\dot{m_{1}}+\dot{m_{2}}=\dot{m_{3}}$

according to energy balance equation

$\dot{m_{in}}h_{in}=\dot{m_{out}}h_{out}$

$\dot{m_{1}}h_{1}+\dot{m_{2}}h_{2}=\dot{m_{3}}h_{3}$

$\dot{m_{1}}h_{1}+\dot{m_{2}}h_{2}=(\dot{m_{1}}+\dot{m_{2}})h_{3}\\(0.5\times 335.02)+(\dot{m_{2}}\times 83.915)=(0.5+\dot{m_{2}})175.90\\\dot{m_{2}}=0.865 kg/s$

4 0

4 years ago

Okay so I've have 10 Brainliest, through my whole time using brainly- I want people to get brainly and points so Im giving away

Nookie1986 [14]

answer:

thank youu for the points cute drawing by the way (✿◠‿◠)

when did you join brainly though?

have a wonderful dayyy !!

4 0

3 years ago

Read 2 more answers

What the velocity from the graph given above?

igomit [66]

Answer:

i think its 4 or 35

Explanation:

its in the middle of 40 and 30

5 0

3 years ago

On a hot day, Dave is relaxing by the pool. He touches the concrete next to the pool and then touches the surface of the water.

Alenkasestr [34]

Answer:

the concrete because the concrete absorbs the suns energy, making it hot

Explanation:

<u><em>Please give me brainliest</em></u>

5 0

3 years ago

Read 2 more answers

A spring is compressed between two objects with unequal masses, m and M, ad held together. The objects are initially at rest on

AlekseyPX

Answer:

Explanation:

The complete question is here.

A spring is compressed between two objects with unequal masses, m and M, held together. The objects are initially at rest on a horizontal friction less surface. When released, which of the following is true?

a) Kinetic energy is same as before being released

b) The total final kinetic energy is zero.

c) The two objects have equal kinetic energy.

d) The speed of one object is equal to the speed of other.

e) The total final momentum of two objects is zero.

So option e) the total final momentum of two objects is zero.

5 0

4 years ago

Flexibility is earned through regular _____ and ______

Flexibility is earned through regular _ and __