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Serhud [2]
3 years ago
5

Is directly proportional to the length and resistivity of the conductor.

Physics
2 answers:
aliya0001 [1]3 years ago
8 0

Answer:

B) resistance

Explanation:

the resistance of a wire is proportional to its length, and inversely proportional to its cross-sectional area.

Andrews [41]3 years ago
4 0

The resistance of conductor is directly proportional to length and resistivity.

Answer: Option B

<u>Explanation: </u>

Resistance is present in an electrical object or rather introduced to counter check the flow of the current. It is similar to the mechanical friction in the conceptualization of its existence and effect.  

It is directly proportional to the length of the electric circuit. It is being measured and noted in ohm. The formula for resistance is –

                              R=\rho \frac{l}{A}

Where,

R - the Resistance of the wire,  

\rho - the resistivity of the wire  

L - The length of the wire

A - the area of cross section of the wire

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if a 10kg object is lifted a distance of 10m from the rest what was the final velocity of the object?
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I think it will be 100 kg
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The speed of an object and direction of its travel is?
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To properly operate the laboratory thermometer Group of answer choices it needs to be shaken but make sure you have enough room
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Answer:

it needs to be shaken but make sure you have enough room to shake it safely

Explanation:

To properly operate the laboratory thermometer  it needs to be shaken but make sure you have enough room to shake it safely. This done because there is a small bend in the mercury channel of a clinical thermometer that uses mercury. You must shake the thermometer to get the mercury from a previous reading from the thermometer back into the bulb for taking new reading. The bend prevents flow back into the tube so that one can comfortably take reading.

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3 years ago
An object is dropped from a height of 75.0 m above ground level. (a) Determine the distance traveled during the first second. (b
lys-0071 [83]

Answer:

a)Distance traveled during the first second = 4.905 m.

b)Final velocity at which the object hits the ground = 38.36 m/s

c)Distance traveled during the last second of motion before hitting the ground = 33.45 m

Explanation:

a) We have equation of motion

             S = ut + 0.5at²

     Here u = 0, and a = g

              S = 0.5gt²

    Distance traveled during the first second ( t =1 )

              S = 0.5 x 9.81 x 1² = 4.905 m

   Distance traveled during the first second = 4.905 m.

b)  We have equation of motion

            v² = u² + 2as

      Here u = 0, s= 75 m and a = g

           v² = 0² + 2 x g x 75 = 150 x 9.81

           v = 38.36 m/s

      Final velocity at which the object hits the ground = 38.36 m/s

c) We have S = 0.5gt²

                   75 = 0.5 x 9.81 x t²

                    t = 3.91 s

   We need to find distance traveled last second

   That is

          S = 0.5 x 9.81 x 3.91² - 0.5 x 9.81 x 2.91² = 33.45 m

   Distance traveled during the last second of motion before hitting the ground = 33.45 m

       

3 0
3 years ago
As a result of nuclear fusion, the sun produces what 2 types of energy ??
ELEN [110]

Answer:

heat energy and nuclear energy

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as a resukt of nuclear fusion, the sun produces two types of energy.

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2. nuclear energy

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