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Leya [2.2K]
2 years ago
12

(c) What is electricity? Write its any two uses​

Physics
1 answer:
DiKsa [7]2 years ago
3 0

Answer:

Electricity is the flow of electrical power or charge. It is a secondary energy source which means that we get it from the conversion of other sources of energy, like coal, natural gas, oil, nuclear power and other natural sources, which are called primary sources.

People use electricity for lighting, heating, cooling, and refrigeration and for operating appliances, computers, electronics, machinery, and public transportation systems.

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No, resolve in both directions separately 
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Why do astronauts appear to move in slow motion in space?
bazaltina [42]

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A few reasons. They are in low gravity environments, so they don't have the advantage of gravity to help move them.

Explanation:

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3 years ago
Use the equation d=m/v. If a rock has a density of 2g/cm^3 and a volume of 8cm^3, what is the mass?
Ray Of Light [21]

Answer:

The mass is 16 [g]

Explanation:

We have to remember the formula that defines density, which mentions that the density is equal to mass divided by the volume.

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8 0
2 years ago
1. Two wires - A and B - with circular cross-sections have identical lengths and are made of the same material. Yet, wire A has
PolarNik [594]

Answer:

Diameter of wire B is 2 times the diameter of wire A

Explanation:

We have given two wire A and B

They are made up of same material and length of both the wire is sane

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Let the resistivity of both the wire is \rho

It is given that wire A has 4 times the resistance as wire B

So R_A=4R_B

So \frac{\rho l_A}{a_A}=4\frac{\rho l_B}{a_B} ( As l_A=l_B )

\frac{a_A}{a_B}=\frac{1}{4}

\frac{d_A^2}{d_B^2}=\frac{1}{4}

\frac{d_A}{d_B}=\frac{1}{2}

d_B=2d_A

So diameter of wire B is 2 times the diameter of wire A

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10 rations measure into appropriate quanitilies
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