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The liquid acquires latent heat from the items in the cooling compartment and changes to vapour. It moves through the coil as the copper fins conducts heat away from the liquid to the environment.
Edwinnyongesa8 answered the question on May 5, 2018 at 16:34
- Given that a kg of copper contains about 10^25 atoms and that the density of copper is about 9000kg/m^3.estimate the diameter of the copper atoms?State...(Solved)
Given that a kg of copper contains about 10^25 atoms and that the density of copper is about 9000kg/m^3. Estimate the diameter of the copper atoms?
State the assumption made.
Date posted: April 19, 2018. Answers (1)
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(Solved)
List the applications/uses of magnets.
Date posted: April 18, 2018. Answers (1)
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What is the difference between hard and soft magnets?
Date posted: April 18, 2018. Answers (1)
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(Solved)
Explain the methods of de-magnetizing a magnetic material.
Date posted: April 18, 2018. Answers (1)
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Describe the methods of magnetizing a magnetic material.
Date posted: April 18, 2018. Answers (1)
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(Solved)
List the characteristics of magnetic field patterns.
Date posted: April 18, 2018. Answers (1)
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List the properties of magnets
Date posted: April 16, 2018. Answers (1)
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State the applications of radioactivity
Date posted: April 12, 2018. Answers (1)
- A radioactive substance has a half life of 10 hours. Calculate the percentage of the sample that remains after 25 hours.(Solved)
A radioactive substance has a half life of 10 hours. Calculate the percentage of the sample that remains after 25 hours.
Date posted: April 12, 2018. Answers (1)
- A radioactive substance is found to have an activity of 360 counts per second. 5minutes later, it was 45counts per second. Determine its half life.(Solved)
A radioactive substance is found to have an activity of 360 counts per second. 5 minutes later, it was 45 counts per second. Determine its half life.
Date posted: April 12, 2018. Answers (1)
- State the characteristics of gamma radiation(Solved)
State the characteristics of gamma radiation
Date posted: April 12, 2018. Answers (1)
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State the characteristics of beta radiation
Date posted: April 12, 2018. Answers (1)
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State the characteristics of alpha radiation
Date posted: April 12, 2018. Answers (1)
- What are the applications of photoelectric effect?(Solved)
What are the applications of photoelectric effect?
Date posted: April 12, 2018. Answers (1)
- The threshold wavelength of a photoemissive surface is 0.45µm. calculate:
a. The threshold frequency of the surface.
b. The workfunction of the surface in eV.
c. The minimum...(Solved)
The threshold wavelength of a photoemissive surface is 0.45µm. calculate:
a. The threshold frequency of the surface.
b. The workfunction of the surface in eV.
c. The minimum speed with which a photoelectron is emitted if the frequency of the radiation is 7.5x1014Hz.
Date posted: April 12, 2018. Answers (1)
- Light of frequency 4.3x1014Hz is irradiated on a surface of metal whose workfunction is 2.6eV. Explain
whether photoelectric emission will occur or not(Solved)
Light of frequency 4.3x1014Hz is irradiated on a surface of metal whose workfunction is 2.6eV. Explain
whether photoelectric emission will occur or not
Date posted: April 12, 2018. Answers (1)
- Calculate the energy of a photon of light of frequency 5.0x1014Hz in (a) joules (b) electron-volt.(Solved)
Calculate the energy of a photon of light of frequency 5.0x1014Hz in (a) joules (b) electron-volt.
Date posted: April 12, 2018. Answers (1)
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State any differences between x-rays and cathode rays.
Date posted: April 12, 2018. Answers (1)
- An x-ray tube operates at 20kV. What is the shortest wavelength in its x-ray beam?
(Solved)
An x-ray tube operates at 20kV. What is the shortest wavelength in its x-ray beam?
Date posted: April 12, 2018. Answers (1)
- An x-ray tube operates at 10kV and a current of 15mA. Calculate the number of electrons hitting the target per second.(Solved)
An x-ray tube operates at 10kV and a current of 15mA. Calculate the number of electrons hitting the target per second.
Date posted: April 12, 2018. Answers (1)