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
andriy [413]
3 years ago
12

In this experiment, you need to examine the idea of thermal energy transfer. Using a controlled experiment, what might a good qu

estion about the variables that affect thermal energy transfer be? Thermal energy transfer depends on many properties, but limit your question to only two.
Physics
3 answers:
Rama09 [41]3 years ago
7 0

Answer:

We shall consider two properties:

1. Temperature difference

2. Thermal conductivity of the material

Use a cylindrical rod of a given material (say steel) which is insulated around its circumference.

One end of the rod is dipped in a large reservoir of water at 100 deg.C and the other end is dipped in water (with known volume) at 40 deg. C. The cold water if stored in a cylinder which is insulated on all sides. A thermometer reads the temperature of the cold water as a function of time.

This experiment will show that

(a) heat flows from a region of high temperature to a region of lower temperature.

(b) The thermal energy of a body increases when heat is added to it, and its temperature will rise.

(c) The thermal conductivity of water determines how quickly its temperature will rise. If mercury replaces water in the cold cylinder, its temperature will rise at a different rate because its thermal conductivity is different.

Explanation:

USPshnik [31]3 years ago
5 0

Answer:

the effect would be 2w=btyh,3

Explanation:

Jayy3 years ago
0 0

answer: How do mass and the type of material affect thermal energy transfer
on edg its right

You might be interested in
calculate the energy spent on spraying a drop of mercury of 1 cm radius into 10^6 droplets all of same radius. surface tension o
WARRIOR [948]

Answer:

ANS : .Energy spent on spraying =4.3542*10^{-4}J

Explanation:

<em>Given:</em>

  • <em>Radius of mercury = 1cm initially ;</em>
  • <em>split into 10^{6} drops ;</em>

Thus, volume is conserved.

i.e ,

\frac{4}{3} \pi R_{o}^{3} = 10^{6}*\frac{4}{3} \pi R_{n}^{3}\\R_{n}=\frac{R_{o}}{10^{2}} = \frac{1cm}{100} = 0.01 cm

  • Energy of a droplet = TΔA

Where ,

  • <em>T is the surface tension </em>
  • <em>ΔA is the change in area</em>

Initial energy E_{i} = T*A_{i}\\= 0.0035 * 4 *\pi *0.01^{2}\\=4.398*10^{-6}J

Final energy E_{f}=10^{6}*T*A_{f}\\=10^{6}*0.0035*4*\pi *(0.0001)^2\\=4.39823*10^{-4}

∴  .Energy spent on spraying = =E_{f}-E{i}\\=(439.823-4.39823)*10^{-6}\\=4.3542*10^{-4}J

ANS : .Energy spent on spraying =4.3542*10^{-4}J

6 0
3 years ago
Plz help with this paper.
lord [1]

Answer:

1. a) Draw a line towards the right side from the engine

b) This force pushes the boat forward and helps it accelerate further

2. a) Fixed volume for both solid and liquid

Compressible for only solid

Fixed shape is also for only Solid

b) The answer is 'c'

c) Solids, because they have their particles closely packed therefore they can be compressed (not so sure bout this answer)

4 0
3 years ago
Who invented gravity
PilotLPTM [1.2K]

Answer: joe

Explanation:

5 0
3 years ago
Read 2 more answers
Ways to increase friction??
natima [27]
Create a “rougher” or more adhesive point of contact,Press the two surfaces together harder., etc.
8 0
3 years ago
List the requirements of practical fuel?
rewona [7]

Answer:

Here we have some of the requirement of practical fuel are

1. It must contain large amount of stored energy.  So that more amount of power output available to run the engines, motors etc.    

2.  It must occur in abundance in nature or be easy to produce.  

3. The fuel must be made up of elements that combine easily with oxygen. Foe example if hydrogen molecules reacts with oxygen. Then the products are at the reaction of lower energy than the reactants, the result is the explosive release of energy and the product of water.  


7 0
3 years ago
Other questions:
  • A weightlifter lifts a 13.0-kg barbel from the ground an moves it a distance of 1.3 meters. What is the work se does on the barb
    9·1 answer
  • A shield of material that reflects neutrons is placed around a radioactive sample.
    5·2 answers
  • Describe the organization of our solar system
    14·2 answers
  • What is an atomic nucleus​
    14·1 answer
  • A rigid vessel of 0.06 m3 volume contains an ideal gas , CV =2.5R, at 500K and 1 bar.a). if 15000J heat is transferred to the ga
    14·1 answer
  • A satellite circles the earth in an orbit whose radius is six times the earth's radius. The earth's mass is 5.98 1024 kg, and it
    14·1 answer
  • Which of the following statements is a true statement about the use of nuclear energy as an alternative energy source?
    11·1 answer
  • 35. A daredevil is launched out of a
    15·1 answer
  • In the spectrum of a galaxy that is travelling away from Earth a hydrogen line is observed to be shifted from 394 nm to 450 nm.
    15·1 answer
  • 11. Why do dark surfaces absorb radiation better than light surfaces?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!