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
Fantom [35]
3 years ago
6

Width, height, thickness and thermal conductivity of a single pane window and the air space of a double pane window. Representat

ive winter surface temperatures of single pane and air space. FIND: Heat loss through single and double pane windows.

Physics
1 answer:
KonstantinChe [14]3 years ago
5 0

Complete Question

The schematics is shown on the first uploaded image

Answer:

For single pane is  Q  =1.96 *10^{4}} \  W  

For  double pane is  Q_2  = 120 \  W

Explanation:

Generally the heat loss through  a single pane is mathematically represented by  Fourier’s law as

      Q  =  k_g *  H^2  *  \frac{ T_1 - T_2 }{L}

=>    Q  =  1.4  *  2^2 *  \frac{ 15 -(-20)  }{ 5 *  \frac{1 \ m}{1000 \ mm}}

=>    Q  =1.96 *10^{4}} \  W        

Generally the heat loss through  a double pane is mathematically represented by  Fourier’s law as

      Q_2  =  k_a *  H^2  *  \frac{ T_1 - T_2 }{L}

=>    Q_2  =  0.024  *  2^2 *  \frac{ 10 -(-15)  }{ 10 *  \frac{1 \ m}{1000 \ mm}}

=>    Q_2  = 120 \  W  

You might be interested in
S When an uncharged conducting sphere of radius a is placed at the origin of an x y z coordinate system that lies in an initiall
telo118 [61]

The sphere has a constant potential. It is the electric field.

E = V_{0} = 0

In the sphere, then

E_{x} = 0,  E_{y}=0,   E_{z}=0

Outside the sphere, then

V = V_{0} - E_{0}z + \frac{E_{0}a^{3}z}{(x^{2} +y^{2} + z^{2})^{3/2}   }

The elements of the electric field include

E_{x} =\frac{3E_{0}a^{3}xy}{(x^{2} +y^{2} +z^{2})^{5/2}}\\E_{y} = \frac{3E_{0}a^{3}xz}{(x^{2} +y^{2}+z^{2})^{5/2}}

Which becomes,

=E_{0} (1-\frac{a^{3}}{x^{2} +y^{2}+z^{2})^{3/2}}+\frac{3a^{3}z^{2}}{(x^{2} +y^{2}+z^{2})^{5/2}})

<h3>In a consistent electric field, is force constant?</h3>

Similar to an ordinary object in the uniform gravitational field near the Earth's surface, a charged item in a uniform electric field experiences a constant force and consequently experiences a uniform acceleration. The vector cross product of p and E determines the torque's direction.

If the charge is positive, the force either moves in the same direction as E or in the opposite direction (if charge is negative).

A torque is experienced by an electric dipole (p) in an even electric field (E). The vector cross product of p and E determines the torque's direction.

To learn more about uniform electric field, visit

brainly.com/question/17426130

#SPJ4

5 0
2 years ago
In a belly-flop diving contest, the winner is the diver who makes the biggest splash upon hitting the water. the size
ad-work [718]

The second diver have to leap to make a competitive splash by 4.08 m high.

<h3>What is potential energy?</h3>

The energy by virtue of its position is called the potential energy.

PE = mgh

where, g = 9.81 m/s²

Given is the diver jumps from a 3.00-m platform. one diver has a mass of 136 kg and simply steps off the platform. another diver has a mass of 100 kg and leaps upward from the platform.

The potential energy of the first diver must be equal to the second diver.

P.E₁ = P.E₂

m₁gh₁ = m₂gh₂

Substitute the vales, we have

136 x 3  = 100 x h₂

h₂ = ₂4.08 m

Thus, the second diver need to leap by 4.08 m high.

Learn more about potential energy.

brainly.com/question/24284560

#SPJ1

7 0
2 years ago
Select the correct answer.
scZoUnD [109]

Answer:

B. It is directly proportional to the source charge.

Explanation:

Gauss's law states that the total (net) flux of an electric field at points on a closed surface is directly proportional to the electric charge enclosed by that surface.

This ultimately implies that, Gauss's law relates the electric field at points on a closed surface to the net charge enclosed by that surface.

This electromagnetism law was formulated in 1835 by famous scientists known as Carl Friedrich Gauss.

Mathematically, Gauss's law is given by this formula;

ϕ = (Q/ϵ0)

Where;

ϕ is the electric flux.

Q represents the total charge in an enclosed surface.

ε0 is the electric constant.

Hence, the statement which is true of the electric field at a distance from the source charge is that it is directly proportional to the source charge.

7 0
2 years ago
Who actually asked Abraham to sacrifice his son?
pochemuha

I think god did ??? I searched it up okay

7 0
2 years ago
Read 2 more answers
In what climates would you expect soil to form fastest? Why?
enyata [817]

Answer:

Soils develop faster in warm, moist climates and slowest in cold or arid ones. Rainfall is one of the most important climate factors in soil formation.

Please mark me brainliest!

Hope this helped God bless :)

5 0
3 years ago
Other questions:
  • List important agents,or causes of erosion
    9·2 answers
  • A piston-cylinder device contains 3 kg of saturated water vapor at 200 kPa. Now heat is transferred to the system at constant pr
    7·1 answer
  • You are trying to move a chair of mass 29.0 kg by pushing it 30* below horizontal, but it is not sliding very easily. The coeffi
    7·1 answer
  • If an 83.00 g sample of Iron has a starting temperature of 297K and an ending temperature of 329K how much heat will be lost fro
    10·1 answer
  • A large truck is moving at 22.0 m/s. If its momentum is 125,000 kg • , what is the truck's mass?
    12·2 answers
  • A ball is drop from the top of a building. You choose the top of the building to be the reference level while your friend choose
    8·1 answer
  • What is the rate at which electrical energy is converted into other forms of energy?
    8·1 answer
  • An example of kinetic energy is ______.
    11·2 answers
  • Why do reflecting telescopes usually have a secondary mirror in addition to a primary mirror?
    6·1 answer
  • A uniform metal meter-stick is balanced with a 1.0 kg rock attached to the left end of the stick. If the support is located 0.25
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!