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Goshia [24]
3 years ago
7

A spring with a spring constant of 2.5 N/m is stretched by 2

Physics
1 answer:
mr_godi [17]3 years ago
3 0

Answer:

Eelas = 5 [J]

Explanation:

Elastic energy is associated with the ability that has a spring or any other material with elastic properties.

We can calculate the elastic energy by means of the following equation:

E_{elas}=\frac{1}{2} *k*x^{2}

where:

k = constant spring = 2.5 [N/m]

x = distance stretched = 2 [m]

E_{elas}=\frac{1}{2} *2.5*(2)^{2}\\E_{elas}=5[J]

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Viefleur [7K]

Answer:

Correct answer: The carpet material is soft, non-stick and diffuse and therefore absorbs waves.

Explanation:

The room is more acoustic if the walls and ceiling and floor are made of hard and polished material that reflects sound waves well while the carpeted room absorbs sound waves so it is less acoustic. The carpet material is soft, non-stick and diffuse and therefore absorbs waves.

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4 0
3 years ago
Diya visited a tailor shop and bought home three cuttings of fabric A,B and C to study their properties. Diya tried burning the
andreev551 [17]

Answer:

Rayon

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Silk Yarn

Explanation:

Rayon

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Silk Yarn:

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3 0
3 years ago
A battery is the power source for what type of current
patriot [66]

Answer: DC Current

Explanation:

Battery is a source of constant potential difference and it will create a constant voltage across any conductor

due to this constant voltage difference the current in this conductor will remain constant

So here since the voltage across the conductor is constant so we can say that current in the conductor will remain constant and hence this is known as DC current.

While for variable current in direction and magnitude is to be obtained only when the conductor is connected with AC voltage source as we know that AC voltage is variable with magnitude and direction both

A battery is the power source for DC type of current.  A battery is a source of constant potential difference that produces a constant current unlike in AC source where the voltage and hence the current changes its polarity continuously.Hence, the current produced by battery is direct current and not Alternating current.

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3 0
3 years ago
Help cant figure out which ones right
Ahat [919]
D.) It is an "Element".

[ Element cannot be separated by any means ]

Hope this helps!
4 0
3 years ago
If you push against a wall, the wall pushes back against you with ____ force.
viva [34]

Answer:

1. Equal.

Explanation:

Newton's third law of motion;

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If we push a wall with some amount of force then wall pushes back with same magnitude but in the opposite direction.This law tell us about action and reaction forces which are in same magnitude but in the opposite direction.

Therefore the answer will be 1.

1. Equal.

5 0
3 years ago
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