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
Wewaii [24]
3 years ago
12

In a certain time interval, natural gas with energy content of 19000 J was piped into a house during a winter day. In the same t

ime interval sunshine coming through the windows delivered 2000 J of energy into the house. The temperature of the house didn't change. What was ?Ethermal of the house, and what was |Q|, the magnitude of the energy transfer between the house and the outside air?
?Ethermal = J

|Q| = J
Physics
2 answers:
Tcecarenko [31]3 years ago
8 0

Answer:

The amount of heat transfer is 21,000J .

Explanation:

The equation form of thermodynamics is,

ΔQ=ΔU+W

Here, ΔQ is the heat transferred, ΔU is the change in internal energy, and W is the work done.

Substitute 0 J for W and 0 J for ΔU

ΔQ = 0J+0J

ΔQ = 0J

The change in internal energy is equal to zero because the temperature changes of the house didn’t change. The work done is zero because the volume did not change

The heat transfer is,

ΔQ=Q  (in ) −Q (out )

Substitute 19000 J + 2000 J for Q(in)  and 0 J for Q(out)

ΔQ=(19000J+2000J)−(0J)

=21,000J

​Thus, the amount of heat transfer is 21,000J .

​

snow_lady [41]3 years ago
6 0

Answer:

The thermal energy of the house is E_{thermal} = 0J

The magnitude of the energy transfer is \Delta Q = 21,000J

Explanation:

From the question we are told that

              The energy content is  E_c   = 19000J

               The energy through sunshine is  E_s  = 2000J

Generally the first law of thermodynamics can be mathematically represented as

                  \Delta Q  = \Delta U + W

Where \Delta Q is the heat transferred

           \Delta U is the change in internal energy with is = 0J  the temperature of the house did not change

            W is the workdone which = 0J This because the volume of the air in the house  did not change

   Therefore  \Delta Q = 0J  + 0J

                             = 0J

And this is equivalent to the thermal energy of the house E_{thermal}

Therefore

         E_{thermal} = 0J

Now the  heat transfer from outside to inside can be mathematically  represented as

              \Delta  Q  =  Q_{in} - Q_ {out}

Now Q_{in} = 19000 + 2000

             = 21,000 J

This because both the energy of the natural and the sunshine are supplied to the house

And  

            Q_{out] = 0 this is because there are no transfer of heat to the surrounding

   Hence

              \Delta Q = 21000 - 0

                    = 21000J

You might be interested in
In an effort to decrease the mAs of an exposure, the 15% rule of kVp change may be considered. Changing the original kVp of 84 u
Roman55 [17]

Answer:

Will result in :Greater Compton scatter interaction

Explanation

This is because The 15% rule states that changing the kVp by 15% has the same effect as doubling the mAs, or reducing the mAs by 50%; that is A 15% increase in kVp has the same effect as doubling the mAs and vice versa but in this case reducing mas causes more Compton scatter because Compton scattering occurs at a lower kvp

8 0
3 years ago
Difference between relaxation time and collision time?
Black_prince [1.1K]
For the answer to the question above, let us first start with relaxation time. it is the absence of an external electric field, the free electrons in a metallic substance will move in random directions so that the resultant velocity of free electrons in any direction is equal to zero. While the Collision time it is<span> the mean </span>time<span> required for the direction of motion of an individual type particle to deviate through approximately as a consequence of </span>collisions<span> with particles of type.</span>
6 0
3 years ago
Read 2 more answers
Your soccer team needs to add a new player midseason. Which of these people would most likely demonstrate good sportsmanship bas
Irina18 [472]
Jasper, because he developed friendships playing with everyone last year,

Thats the answer
5 0
3 years ago
Read 2 more answers
How do fossils provide evidence that evolution has taken place
zzz [600]
<span>Fossils provide solid evidence that organisms from the past are not the same as those found today; they show a progression of evolution. Scientists calculate the age of fossils and categorize them to determine when the organisms lived relative to each other. Hope this helps</span>
7 0
3 years ago
Students want to investigate the inverse relationship between the pressure and temperature of an ideal gas as predicted by the i
grin007 [14]

Answer:

Option B, Fix the piston in place so the volume of the pas remains constant

Explanation:

As we know

\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}

The effect on variable due to another variable can be studied by keeping the third variable constant.

Hence, in order the study the variation of temperature with pressure or vice versa, the volume needs to fixed at a certain value.

Hence, option B is correct

7 0
3 years ago
Other questions:
  • If a constant force acts on two objects of different masses which object will accelerate more?
    10·1 answer
  • The period of a mechanical wave is 5 seconds. What is the frequency of the wave?
    5·1 answer
  • Use your data to predict what a 400g bag would weigh.
    11·1 answer
  • What does resonance result in? Quieter sounds, frequency, amplitude
    9·2 answers
  • NEED HELP WITH THIS! ( arithmetic sequences )
    10·1 answer
  • Julie carries an 8.0-kg suitcase as she walks 18 m along an inclined walkway to her hotel room at a constant speed of 1.5 m/s. T
    15·2 answers
  • Explain how heat is related to temperature and thermal energy...
    13·1 answer
  • Tarzan, whose mass is 75 kg, is running from a cheetah. Tarzan is moving at 5 m/s when he grabs onto a hanging vine. How high of
    7·1 answer
  • What is another way to describe the vector 100 m/s down
    5·1 answer
  • 5) The max, height reached by a bike rider is 250m after she reaches top speed and then
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!