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
Tatiana [17]
2 years ago
8

To understand the formula for power radiated in the form of electromagnetic energy by an object at nonzero temperature. every ob

ject at absolute (kelvin) temperature t will radiate electromagnetic waves. this radiation is typically in the infrared for objects at room temperature, with some visible light emitted for objects heated above 1000 k. the formula governing the rate of energy radiation from a surface is given by p=eσat4, where p is the thermal power (also known as the heat current h). part a this formula applies to _______________. this formula applies to _______________. any object of total surface area a, kelvin temperature t, and emissivity e any object of cross-sectional area a, kelvin temperature t, and emissivity e any object of total surface area a, kelvin temperature t, and emissivity σ any object of cross-sectional area a, kelvin temperature t, and emissivity σ request answer part b
Physics
1 answer:
lbvjy [14]2 years ago
3 0

As per Stefan - Boltzmann law we know that

1. Power radiated in the form of electromagnetic energy by an object at nonzero temperature.

2. Every object at absolute (kelvin) temperature t will radiate electromagnetic waves.

3. This radiation is typically in the infrared for objects at room temperature, with some visible light emitted for objects heated above 1000 k.

4. The formula governing the rate of energy radiation from a surface is given by p=eσat^4,

where p is the thermal power (also known as the heat current h).

Thermal radiation in visible light can be seen on hot metalwork. Its emission in the infrared is invisible to the human eye. Infrared cameras are capable of capturing this infrared emission.

Thermal radiation is electromagnetic radiation generated by the thermal motion of charged particles in matter. All matter with a temperature greater than absolute zero emits thermal radiation. Particle motion results in charge-acceleration or dipole oscillation which produce electromagnetic radiation.

Examples of thermal radiation include the visible light and infrared light emitted by an incandescent light bulb, the infrared radiation emitted by animals that is detectable with an infrared camera, and the cosmic microwave background radiation. Thermal radiation is different from thermal convection and thermal conduction—a person near a raging bonfire feels radiant heating from the fire, even if the surrounding air is very cold.

Sunlight is part of thermal radiation generated by the hot plasma of the Sun. The Earth also emits thermal radiation, but at a much lower intensity and different spectral distribution. The Earth's absorption of solar radiation, followed by its outgoing thermal radiation, are the two most important processes that determine the temperature and climate of the Earth in most climate models.

So the correct answer which is applicable here will be

This formula applies to any object of total surface area a, kelvin temperature t, and emissivity e

here

\sigma[\tex] = stefan boltzmann constant = [tex]5.67 * 10^{-8}

You might be interested in
si comparamos la gota de agua cayendo en una gotera, y el sonido del agua hirviendo,ambos con la misma intensidad ¿cuál sonido t
mrs_skeptik [129]

Answer:

ambas

Explanation:

Tendrían el mismo sonido ya que la intensidad es la misma.

8 0
3 years ago
How much work is done by 0.070 m3 of gas, when the volume remains constant with pressure of 63 x 105 Pa?
ICE Princess25 [194]

Answer:

W = 0 J

Explanation:

The amount of work done by gas at constant pressure is given by the following formula:

W = P\Delta V

where,

W = Work done by the gas

P = Pressure of the gas

ΔV = Change in the volume of the gas

Since the volume of the gas is constant. Therefore, there is no change in the volume of the gas:

W = P(0\ m^3)\\

<u>W = 0 J</u>

5 0
2 years ago
Exercises
Crank

\\ \rm\Rrightarrow \dfrac{1}{u}+\dfrac{1}{v}=\dfrac{1}{f}

\\ \rm\Rrightarrow \dfrac{1}{u}=\dfrac{1}{-10}+\dfrac{1}{38}

\\ \rm\Rrightarrow \dfrac{1}{u}=\dfrac{-19+5}{190}

\\ \rm\Rrightarrow \dfrac{1}{u}=\dfrac{-14}{190}

\\ \rm\Rrightarrow u=\dfrac{190}{-14}

\\ \rm\Rrightarrow u=13.6cm

Real

5 0
2 years ago
A group of runners complete a 26.2 mile marathon in 3.4 hours. The distance between the start and finish lines is 12.2 miles. Wh
NNADVOKAT [17]

26.2/3.4 would be the average velocity for the run.

7.7 miles/hr

8 0
2 years ago
Read 2 more answers
I need so much help 50 points!!!!!!<br><br>complete the graph
motikmotik

<u>First Symbol </u>: Cobalt (Co)

Its Group Number - 9

Its Period Number - 4

Its Family Name - Transition Metal

<u>Second Symbol</u> : Silicon (Si)

Its Group Number - 14

Its Period Number - 2

Its Family Name - Semiconductor

<u>Third Symbol</u> : Astatine (At)

Its Group Number - 17

Its Period Number - 6

Its Family Name - Halogen

<u>Fourth Symbol </u>: Magnesium (Mg)

Its Group Number - 2

Its Period Number - 3

Its Family Name - Alkaline Earth Metal

<u>Fifth Symbol</u> : Xenon (Xe)

Its Group Number - 18

Its Period Number - 5

Its Family Name - Noble Gas

6 0
3 years ago
Other questions:
  • The planets in the solar system are believed to have formed as a result of a process known as
    14·1 answer
  • Which of the following is an example of the law of conservation of energy?
    7·2 answers
  • An RV is traveling 60 km/h along a highway at night. A boy sitting near the driver of the RV turns a flashlight on and shines it
    15·1 answer
  • How much time does it take for a plane To fly 5000 miles if the plane travels a speed of 500 miles per hour?
    13·2 answers
  • An object with a mass of 1.5kg changes its velocity from +15m/s to +22 during a time interval of 3.5 seconds. What Impulse was d
    13·1 answer
  • Whats a snoogley please help
    8·1 answer
  • An object is thrown up at 20m/s if it hits the ground after 10s,determine the final velocity and the height
    8·1 answer
  • Animal-vehicle collisions can happen any time of the year, but_______ is the peak season for deer- car collisions.
    7·2 answers
  • Why can't 41 be represented in a binary table?
    15·1 answer
  • 5 What is the maximum speed at which a car round a curve of 25m radius on a level road if the coefficient of static friction bet
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!