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3 years ago

What is brainstorming and why is it important to create the perfect solution to a problem? giving brainliest to the first answer

1 answer:

5 0

Brainstorming allows people to think freely without judge, or fear to share there answer. Basically encourages people to open up to what they believe.

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Steam enters a turbine operating at steady state with a mass flow of 10 kg/s, a specific enthalpy of 3100 kJ/kg, and a velocity

likoan [24]

Answer:7989.86KW

Explanation:

Given data

$h_1$ =3100 KJ/kg

$\dot{m}$ =10kg/s

$V_1$ =30m/s

$Z_1$ =3m

$h_2$ =2300KJ/kg

$V_2$ =45m/s

$Z_2$ =0

using steady flow energy equation which is

$\dot{m}$ $\left (h_1+gZ_1+\frac{V_1^2}{g}\right )$ + $\dot{Q}$ = $\dot{m}$ $\left (h_2+gZ_2+\frac{V_2^2}{g}\right )\+$ $\dot{W}$

$10\left (3100+\frac{9.81\times 3}{1000}+\frac{30^2}{9.81\times 1000}\right )$ + $\dot{Q}$ = $10\left (2300+\frac{9.81\times 0}{1000}+\frac{45^2}{9.81\times 1000}\right )$ + $\dot{W}$

$10\left ( \left ( 3100-2300\right )+\frac{30^{2}-45^{2}}{2\times 9.81\times 1000}+\frac{9.82\times 3}{1000}\right )$ - $1.1\times 10$ = $\dot{W}$

$\dot{W}$ =7989.8673 KW

7 0

4 years ago

Clothing made of several thin layers of fabric with trapped air in between, often called ski clothing, is commonly used in cold

Pavlova-9 [17]

Answer:

Q=127.66W

L=9.2mm

Explanation:

Heat transfer consists of the propagation of energy in the form of heat in different ways, these can be convection if it is through a fluid, radiation through electromagnetic waves and conduction through solid solids.

To solve any problem related to heat transfer, the general equation is used

Q = delta / R

Where

Q = heat

Delta = the temperature difference

R = is the thermal resistance by conduction, convection and radiation

to solve this problem we propose the previous equation

Q = delta / R

later we find R

$R=[tex]r=\frac{6L1}{AK1} +\frac{5L2}{AK2}+\frac{1}{Ah}$

$R=\frac{6(0.0001)}{(1.25)(0.026)} +\frac{5(0.012)}{(1.25)(0.026)}+\frac{1}{(25)(1.25)} =0.235 K/w$

Q=(25-(-5))/0.235=127.66W

part b

we use the same ecuation with Q=127.66

Q = delta / R

Δ $R=\frac{L}{KA} +\frac{1}{hA} \\R=\frac{L}{(0.035)(1.25)} +\frac{1}{(25)(1.25)}\\ R=22.85L+0.032\\Q=(T1-T2)/R\\\\127.66=(25-(-5))/(22.85L+0.032)\\solving for L\\L=9.2mm$

6 0

3 years ago

What does it mean if a manufacturing company "retools"?

zmey [24]

Answer:

It mean to equip more tools.

Explanation:

I hope this helps.

6 0

3 years ago

Read 2 more answers

Simplify the following expressions, then implement them using digital logic gates. (a) f = A + AB + AC (b) f = AB + AC + BC (c)

Tema [17]

<u>Explanation</u>:

(a)

$f=A+A B+A C\\=A[1+B+C]=A \quad[1+x=1]\\F=A$

No gate is required to implement this function

(b)

$\begin{aligned}&\ f=A B+\bar{A} C+B C\\&\therefore f=A B+A C\end{aligned}$ $\begin{array}{l}(A B+\bar{A} C+B E=A B+\bar{A} C \\B C \text { is redendant })\end{array}$

Note: Refer the first image.

(c)

$\begin{aligned}f &=\overline{A+B}+A \bar{B}+B \bar{C} \\&=(\bar{A} \bar{B})+A \bar{B}+B \bar{C} \\&=\bar{B}[A+\bar{A}]+B \bar{C} \\& F=\bar{B}+B \bar{C} =\bar{B}+\bar{C}\end{aligned}$

Note: Refer the second image

(d)

$\begin{aligned}f=& A B \bar{c}+\overline{A+\bar{c}} \\=& A B \bar{c}+\bar{A} \bar{c}=\bar{A} B \bar{c}+\bar{A} c \\f=& \bar{A}[c+B \bar{c}] . \\& f=\bar{A} B+\bar{A} c=\bar{A}(B+c)\end{aligned}$