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Stels [109]
3 years ago
14

Which of the following is a poor conductor of heat?. A. silver. B. aluminum. C. gold. D. copper. E. air. How can you tell the di

fference if its a poor conductore or not?o.o
Physics
2 answers:
tankabanditka [31]3 years ago
8 0

Definitely air since most metals are conductors and air is an insulator.

Rama09 [41]3 years ago
3 0
The answer is E. air
Air is a poor conductor of heat. This can be determined through a property called thermal conductivity and has a unit of W/m.K. It is described as a quantity of heat through a unit thickness of material per temperature. The higher the thermal conductivity of a material, the more it is able to conduct heat. Most gases are poor conductors of heat.
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How would the period of pendulum differ from an equivalent one on earth?<br>​
Mars2501 [29]

Answer:

If you know that that free fall acceleration g on the Moon is about 6 times less than on the Earth, it gives you the answer: on the Moon the same pendulum will have a period about √6≈2.45 longer than on the Earth.

5 0
3 years ago
What is the only possible value of ml for an electron in an s orbital?
Archy [21]

Answer:

  • zero

Explanation:

m_l     is the magnetic quantum number.

The only possible value for the magnetic quantum number for an electron in an s orbital is 0.

The first three quantun numbers are:

  • n: principal quantum number. It may have positive integer values: 1, 2, 3, 4,5, 6, 7, ...

  • l : Azimuthal or angular momentum quantum number. It may have integer values from 0 to n - 1.

       This quantum number is related to the type (or shape) of the orbital:

        For s orbitals l=0

        For p orbitals l=1

        For d orbitals l=2

         For f orbitals l=3

In this case, it is an s orbital, so we have l=0.

  • m_l , the third quantum number can have integer values  {from-l}   to    {+l}

       Since, for the s orbitals  l=0 , the only possible value for {m_l} is zero.

4 0
3 years ago
Julie is cycling at a speed of 3.4 meters/second. If the combined mass of the bicycle and Julie is 30 kilograms, what is the kin
nexus9112 [7]

Answer:

A

Explanation:

KE = 1/2 mv^2

=1/2(30kg)( 3.4 m/s)^2

=173.4 joules

=1.7×10^2 joules

6 0
3 years ago
Reduce<br> Reflects<br> Transfers<br> Stops
Bond [772]
I think transfers is the answer
4 0
3 years ago
An iron ball and an aluminum ball of mass 100 g each are heated to the same temperature and then cooled to a temperature of 20°
Y_Kistochka [10]
Becaused it the thing was cod that why
4 0
3 years ago
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