In a wire, when elongation is 4 cm energy stored is E. if it is stretched by 4 cm find the energy stored

Answers

Answer 1

The answer is 25 E

We know, potential energy of spring is given by (1/2)kx² where k is spring constant and x is stretched distance.

Here , x=4 cm so, U=(1/2)k*4²=8k

For, x= 4cm :-

E=(1/2)k* 4²= 8k=U.

Final potential energy will be E= U.

Related Questions

which statement regarding vessel maintenance is true?
A- When storing a vessel for a long time, it is best to keep it in the sun and uncovered
B- when cleaning a vessel, use regular household detergents and cleaners
C- When replacing electrical parts on a vessel, never use automotive parts
D- When preparing your vessel for cold weather, use antifreeze that contains ethylene glycol

Answers

C most likely because the rest are wrong

The true statement is that when a person is person is preparing their vessel for cold weather, then it's important to use antifreeze which contains ethylene glycol.

During cold weather, it's common for vessels to have their parts or engine frozen due to the weather.

The freezing of the engine can lead to an accident or spoil the vessel. Therefore, it is advisable to use ethylene glycol since it's an antifreeze and using it can prevent an accident or spoilage of the parts of the vessel.

Therefore, the correct option is D.

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Which of the following are hazards associated with portable ladders?

A) Ladder is not positioned correctly

B) Ladder is too long

C) Ladder is not tied off correctly

D) Unsteady ladder

Answers

Answer:

A,C, and D

Explanation:

Potible ladders have to configure with many designs in mind but the most evedent is that they are usally unstable

BRAINLIEST PLS

The following are the hazards associated with portable ladders are:

A) Ladder is not positioned correctly

C) Ladder is not tied off correctly

D) Unsteady ladder

What are portable ladders?

Portable ladders are those ladders that can be folded and light weighted and made up of plastic or steel. They are portable to be used in homes and indoors.

They are easy to transport and easy to work with because they are lightweight, and they take less space to put them. But as they are lightweight, they will easily fall down.

They contain support behind them, they don't need to tie down and need support, so there are chances of being it unsteady.

Thus, the hazards associated with portable ladders are:

A) Ladder is not positioned correctly

C) Ladder is not tied off correctly

D) Unsteady ladder

To learn more about portable ladders, refer to the link:

https://brainly.com/question/28069347

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Which of the following is a clear indicator that the tire is at the end of its legal life?

Select one:
A. Out-of-Balance Conditions
B. Tread depth above the level of built-in wear indicators
C. Low tire pressure
D. Tread depth below the level of built-in wear indicators

Answers

Answer:

Option D, Tread depth below the level of built-in wear indicators

Explanation:

The legal life of tire is checked by looking out for tread wear indicators. In general, tread wear indicators are nothing but small bars of width of 5 mm. These bars are built in the main grooves of the tires.

If the tire tread is at the top level of the tread wear indicating bar, then it means that tires have reached the legal limit of tire death (1.6 mm)

Hence, option D is correct

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