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lys-0071 [83]
4 years ago
14

Scissors are considered a compound machine because

Physics
1 answer:
Novosadov [1.4K]4 years ago
3 0
They make work easier
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Can someone define 'work' for me please? I looked it up but there are a lot of different answers.
vekshin1

Answer:

Work- Activity involving mental or physical effort done in order to achieve a purpose or result.

Explanation:

This was the first definition from the dictionary on google :)

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In the picture below, the candle is heating the water in the tank. Which picture shows how the water will move as it gets hot?
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A parallel-plate capacitor initially has a potential difference of 400 V and is then disconnected from the charging battery. If
Damm [24]

The capacitance of a capacitor is the ratio of the stored charge to its potential difference, i.e.

C = Q/ΔV

C is the capacitance

Q is the stored charge

ΔV is the potential difference

Rearrange the equation:

ΔV = Q/C

We also know the capacitance of a parallel-plate capacitor is given by:

C = κε₀A/d

C is the capacitance

κ is the capacitor's dielectric constant

ε₀ is the electric constant

A is the area of the plates

d is the plate separation

If we substitute C:

ΔV = Qd/(κε₀A)

We assume the stored charge and the area of the plates don't change. Then if we double the plate spacing, i.e. we double the value of d, then the potential difference ΔV is also doubled.

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3 years ago
The periodic table lists all the elements according to the number of __________ they have! You can’t change __________ without c
raketka [301]

Answer:

protons

atomic number

Note: The same atomic number can be associated with several different values of atomic mass, but an element can have only 1 atomic number,

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Why x ray is called an electromagnetic wave<br>​
Dahasolnce [82]
Because they behave just like all the electromagnetic waves of the spectrum. Same equations, just shorter wavelengths and more energy.

Hope you get it :)
7 0
3 years ago
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