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Dmitrij [34]
2 years ago
10

Name of impurities present in zinc plate used in simple cell.​

Physics
1 answer:
raketka [301]2 years ago
8 0

Mercury is present in zinc plate which is used in simple cell

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Consider that 168.0 J of work is done on a system and 305.6 J of heat is extracted from the system. In the sense of the first la
Ilia_Sergeevich [38]

To solve this problem we must resort to the Work Theorem, internal energy and Heat transfer. Summarized in the first law of thermodynamics.

dQ = dU + dW

Where,

Q = Heat

U = Internal Energy

By reference system and nomenclature we know that the work done ON the system is taken negative and the heat extracted is also considered negative, therefore

W = -168J \righarrow  Work is done ON the system

Q = -305.6J \rightarrow Heat is extracted FROM the system

Therefore the value of the Work done on the system is -158.0J

3 0
3 years ago
Why is it easier to open a door by holding it from it's edge​
Crazy boy [7]

Answer:

leverage

Explanation:

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2 years ago
What is the focal length of a lens
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The focal length of a lens is refers to the distance from the center of the lens to the principal foci.

4 0
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Which of the following is characteristic of proficient catching?
uysha [10]

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The correct answer is option D i.e. A and C

Explanation:

The correct answer is option D i.e. A and C

for proficient catching player must

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- to catch ball at high height move the finger at higher position

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An student in a swimming pool weighs 450 N and in a regular balance out of the swimming pool weighs 700 N. What is the value of
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