How to calculate overall heat transfer coefficient for cross flow Air Preheater as need to design Air preheater?

Physics

2 answers:

JulijaS [17]2 years ago

5 0

Answer:

here lol......................

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Irina-Kira [14]2 years ago

3 0

answer:

write number easy

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What is heat?

alina1380 [7]

Answer:

Heat is the energy that flows between two substances of different temperatures.

Explanation:

Heat is a type of energy in transition that is transferred by non-mechanical means between systems, which means that it is energy that is transferred (or that <u>flows </u>) from one system to another.

This flow of energy occurs due to a temperature difference, and heat will flow from the system or substance with a higher temperature to the substance with a lower temperature, and if kept in contact they will eventually reach the thermal equilibrium.

So the correct answer is: Heat is the energy that flows between two substances of different temperatures.

3 0

3 years ago

Read 2 more answers

What is the electric force between a +2 µC point charge and a –2 µC point charge if they are separated by a distance of 5.0 cm?

mrs_skeptik [129]

The electrostatic force between two point charges is given by:
$F=k_e \frac{q_1 q_2}{r^2}$
where
$k_e = 8.99 \cdot 10^9 Nm^2 C^{-2}$ is the Coulomb's constant
q1 and q2 are the two charges
r is the distance between them

In our problem, charge 1 is
$q_1 = +2 \muC = +2.0 \cdot 10^{-6}C$
while charge 2 is
$q_2 = -2 \mu C=-2.0 \cdot 10^{-6} C$
and their distance is
r=5.0 cm=0.05 m

So, the electrostatic force between them is
$F=(8.99 \cdot 10^9 Nm^2C^{-2}) \frac{(+2\cdot 10^{-6}C)(-2 \cdot 10^{-6}C)}{(0.05 m)^2} =-14.4 N$

And the negative sign means the force is attractive, because the two charges have opposite sign.

7 0

3 years ago

For your senior project, you would like to build a cyclotron that will accelerate protons to 10% of the speed of light. The larg

jeyben [28]

Answer:

<h2>Magnetic field strength in that region is 1.2 T</h2>

Explanation:

As we know by the formula of radius of charge moving in external field is given as

$R = \frac{mv}{qB}$