1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sholpan [36]
4 years ago
14

Consider an opaque horizontal plate that is well insulated on its back side. The irradiation on the plate is 2500 W/m2, of which

500 W/m2 is reflected. The plate is at 227°C and has an emissive power of 1200 W/m2. Air at 127°C flows over the plate with a convection heat transfer coefficient of 15 W/m2 ⋅ K. Determine the emissivity, absorptivity, and radiosity of the plate. What is the net heat transfer rate per unit area?

Physics
1 answer:
GuDViN [60]4 years ago
8 0

Answer:

i. 0.34

ii. 0.4

iii. 1700 w/m²

iv. 2211.36 w/m²

Explanation:

Given that

Irradiation of the plate, G = 2500 w/m²

Reflected rays, p = 500 w/m²

Emissive power, E = 1200 w/m²

See attachment for calculations

You might be interested in
You will now use Graphical Analysis to calculate the slope of the line. Choose Analyze from the menu. Select Automatic Curve Fit
Vlad1618 [11]
The value for the slope is <span>M=1.13</span>
3 0
3 years ago
URGENT!! An astronaut on the International Space Station is doing a spacewalk to fix a solar panel that has malfunctioned. While
aleksley [76]

C because the air will push him closer to the space station

3 0
3 years ago
Read 2 more answers
List atleast 10 applications of chemical effect of electric current
Komok [63]

Answer:

formation of gas bubbles at electrodes

deposition of metals at electrodes

changes in solution colour

electroplating

electrolysis

4 0
3 years ago
Convection occurs when thermal energy is transferred by the movement of
madam [21]

Answer:

Convection is the transfer of thermal energy from one place to another by the movement of gas or liquid particles. How does this happen? As a gas or liquid is heated, the substance expands. This is because the particles in liquids and gases gain kinetic energy when they are heated and start to move faster.

6 0
3 years ago
Suppose a cart with no fans has a starting velocity of 2 m/s. What will be the velocity of the cart when it reaches the wall?
Roman55 [17]

Answer:

less than stating velocity due to friction and air resistance.

Explanation:

3 0
3 years ago
Other questions:
  • If the mass of a material is 43 grams and the volume of the material is 14 cm^3, what would the density of the material be
    6·1 answer
  • The specific heat of a liquid Y is 4.2 cal/g degrees Celsius. A sample grams of this liquid at 137 K is heated to 265K. The liqu
    15·1 answer
  • Give three practical uses of electromagnets
    9·1 answer
  • 1. A student mixes baking soda and vinegar in a glass. Do you think any new substances are being created in this mixture? If so,
    15·1 answer
  • What is the mass of a person who has a weight of 647N?<br> Will mark brainliest if u help me!!
    10·1 answer
  • Imagine you transfer heat into a gas. This heat splits up in two different ways: Additional thermal energy making the gas hotter
    7·1 answer
  • You can send your picture<br>and type the answer to the questions
    8·1 answer
  • 2. Two projectiles thrown from the same point at angles 0,=60° and 02=30° with the horizontal,
    5·1 answer
  • 21
    8·1 answer
  • Thinking about planck's law, which star would give off the most orange light?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!