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
OLEGan [10]
3 years ago
10

Find the emitted power per square meter of peak intensity for a 3000 k object that emits thermal radiation.

Physics
2 answers:
Aleksandr [31]3 years ago
8 0
According to Stefan-Boltzmann Law, the thermal energy radiated by a radiator per second per unit area is proportional to the fourth power of the absolute temperature. It is given by;
    P/A = σ T⁴ j/m²s 
Where; P is the power, A is the area in square Meters, T is temperature in kelvin and σ is the Stefan-Boltzmann constant, ( 5.67 × 10^-8 watt/m²K⁴)
Therefore;
Power/square meter = (5.67 × 10^-8) × (3000)⁴
                                 =  4.59 × 10^6 Watts/square meter
steposvetlana [31]3 years ago
8 0

Explanation:

we can calculate total  emitted power per square from Stefan-Boltzmann law

P = e σ AT⁴

where

P= power of body's thermal radiation

A= surface area of the body

σ= Stefan-Boltzmann constant it's value is  5.67 *10^-8 W/m^2k^4

T= temperature of the body

e= emissivity of the substance here equal to 1

now by putting all the values in given formula

P/A= (1) (5.67*10^-8 W/m^2K^4)(3000)^4

we get the answer

P/A= 4.5*10^ 6 W/m^2

You might be interested in
In the equation for the gravitational force between two objects, which quantity must be squared?​
Trava [24]
The distance quantity/ measurement must be squared.
3 0
3 years ago
Read 2 more answers
6–23 an automobile engine consumes fuel at a rate of 22 l/h and delivers 55 kw of power to the wheels. if the fuel has a heating
Anna007 [38]

Explanation & answer:

Given:

Fuel consumption, C = 22 L/h

Specific gravity = 0.8

output power, P  =  55 kW

heating value, H = 44,000 kJ/kg

Solution:

Calculate energy intake

E = C*P*H

= (22 L/h) / (3600 s/h) * (1000 mL/L) * (0.8 g/mL) * (44000 kJ/kg)

= (22/3600)*1000*0.8*44000 j/s

= 215111.1 j/s

Calculate output power

P = 55 kW

= 55000 j/s

Efficiency

= output / input

= P/E

=55000 / 215111.1

= 0.2557

= 25.6% to 1 decimal place.

8 0
3 years ago
Which is the truest statement? Standing is health-enhancing because it uses energy. Jogging is not a good way tp enhance your he
Setler [38]
A. <span>Standing is health-enhancing because it uses energy.

Because standing can burn a lot of calories.</span>

5 0
3 years ago
What are the 3 Newton's law of motions?
irinina [24]

Answer:

laws of motion relate an object’s motion to the forces acting on it. In the first law, an object will not change its motion unless a force acts on it. In the second law, the force on an object is equal to its mass times its acceleration. In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction.

4 0
2 years ago
A technician wishes to determine the wavelength of the light in a laser beam. To do so, she directs the beam toward a partition
Nana76 [90]

Answer:

λ = 5.656 x 10⁻⁷ m = 565.6 nm

Explanation:

Using the formula of fringe spacing from the Young's Double Slit experiment, which is given as follows:

\Delta x = \frac{\lambda L}{d}\\\\\lambda = \frac{\Delta x\ d}{L}

where,

λ = wavelength = ?

Δx = fringe spacing = 1.6 cm = 0.016 m

L = Distance between slits and screen = 4.95 m

d = slit separation = 0.175 mm = 0.000175 m

Therefore,

\lambda = \frac{(0.016\ m)(0.000175\ m)}{4.95\ m}\\\\

<u>λ = 5.656 x 10⁻⁷ m = 565.6 nm</u>

6 0
3 years ago
Other questions:
  • Describe how you could made a sound wave have a higher pitch.
    5·1 answer
  • I have to draw a wave on a separate sheet of paper given the following measurements down below. I'm a bit confused, do I just us
    5·1 answer
  • What is the name of alfred wegener's hypothesis about moving land masses?
    12·2 answers
  • The maximum permissible workday dose for occupational exposure to radiation is 18 mrem. A 54-kg laboratory technician absorbs 2.
    13·1 answer
  • What happens to your behind when you sit for too long?
    7·2 answers
  • Complete the sentences<br>A flow of negatively charged electrons is an ____________<br>​
    5·1 answer
  • The Outlaw Run roller coaster in Branson, Missouri, features a track that is inclined at 84 ∘ below the horizontal and that span
    8·1 answer
  • The hottest recorded temperature in the history of the United States is 134 °F, which is 57 °C. What would the speed of sound at
    13·1 answer
  • Electrical energy is sold by the kilowatt hour How much would it cost to heat a hot tub from 15 to 43
    11·1 answer
  • The conservation of momentum is most closely related to
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!