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potential energy
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What energy conversions occur in a pole vaulter?
When the pole vaulter just passes over the bar, he/she is almost stationary, and certainly at the maximum height reached above the ground, so apart from a very small amount of kinetic energy as a result of passing over the bar, all the energy put into the vault is bound up in gravitational potential energy. During the approach, the jumper runs up so has acquired kinetic energy. Then during the vault he/she exerts force on the pole to gain height, and to convert the horizontal kinetic energy into a vertical direction. This force comes from the chemistry of the muscles of the body. So the overall conversion is from kinetic energy plus muscular chemical energy into gravitational potential energy, which is then converted back to kinetic energy on the descent.
Why solids have negligible kinetic energy?
Its NOT.Kinetic energy is the energy of mass in motion. Two equal masses, one of a fluid the other solid, if moving at the same speed, will have EQUAL amounts of kinetic energy. In terms of micro kinetic energy - the energy of vibration of individual atoms or molecules - otherwise known as heat - in a solid the packing structure limits the amount of vibration possible which is why as heat increases the solid melts and then the liquid then turns into a gas. However, again the micro kinetic energy in a solid is not negligible. Would you want to pick up a glowing iron bar?
Describe how the chemical energy in porridge is converted to the gravitational potential energy in the lifted bar?
I'm stuck on the exact same question as well. Are you in the AQA WORKBOOK?
How do you convert kinetic energy into electrical energy by a student?
In order for Kinetic energy to be converted into electrical energy, the kinetic energy usually drives the rotation or oscillation of a magnet in close proximity to coiled wire. A bar magnet can be moved up and down through the centre of a looped coil of wires. As the wire comes into contact with the magnetic field of the magnet, a current is induced in the wire. (see Left hand rule) Likewise, a collection of magnets attached to a large prop shaft when rotated will induce a current in a large array of coiled wires which surround but do not touch the circled array of magnets. Kinetic energy is essentially converted into electrical energy in most production of electricity. Oil, Gas, Coal or Nuclear energy are all used to heat water; the steam of which turns turbines and therefore the prop shaft. (Chemical energy-kinetic energy-electrical energy) Answer given by Neetu Singh Lambha.
What is difference between potential energy and strain energy?
Think of a cylindrical steel bar with cross section area A.If you hold it by both ends and pull them apart witha force F, the bar is been subject to a Tensile StressT, such that, T = F/A (units of newton/m2)If the forces had been in the opposite direction theywould have produced a Compression Stress.Now, suppose that the bar's original length is L, andbecause of the Tensile Stress that she has been putthrough it elongates dL meters. Then the StrainSTthe bar has suffer is: ST = L/dL (dimensionless)And so Strain is the deformation fraction the bodyexperiments as a response to a given Stress.
where on the swing is the kinetic energy the greatest and the potential energy the least?
In between the ground and the bar that holds the swing up so the middle
What energy conversions occur in a pole vaulter?
When the pole vaulter just passes over the bar, he/she is almost stationary, and certainly at the maximum height reached above the ground, so apart from a very small amount of kinetic energy as a result of passing over the bar, all the energy put into the vault is bound up in gravitational potential energy. During the approach, the jumper runs up so has acquired kinetic energy. Then during the vault he/she exerts force on the pole to gain height, and to convert the horizontal kinetic energy into a vertical direction. This force comes from the chemistry of the muscles of the body. So the overall conversion is from kinetic energy plus muscular chemical energy into gravitational potential energy, which is then converted back to kinetic energy on the descent.
Is the food you eat potential or kinetic energy?
The food energy that can be utilized by the eater of the food is chemical potential energy. In a food fight, when the food is propelled through the air, it temporarily acquires some kinetic energy as well, which has nothing to do with its identity as food, and can't be utilized by eating the food, since it must come to rest before the eating commences. ________ All matter is made up of a combination of kinetic and potential energy. The kinetic energy that comprises your food is all the energy of motion of its molecules. The hotter your food, the faster its molecules are moving and the more kinetic energy they posess. Also, as mentioned above, if you throw your food, it will posess bulk kinetic energy. However, the majority of the energy contained within food is potential energy stored within what you could think of as unhappy chemical bonds. When you eat food, your body invests a little energy to break apart these unhappy bonds and makes new, happier bonds between the food molecules and the oxygen you breathe. When these happy bonds form, a large ammount of energy is released. Your body uses this energy for running around and having food fights.
Explain how a pole vaulter uses potential and kinetic energy to vault himself over the bar?
many people say that a vaulters run up is what is building there potintial energy which is sortof true but in reality however much the pole bends is the potintial energy of the vault
Which of the following is using chemical potential energy?
Answer this question… A hiker eating an energy bar
answers candy bar?
candy bar
What is speed racers candy bar?
Speed Racer's favorite candy bar is a Japenese Candy Bar.
Is a jelly bean a candy bar?
No. It is a candy but not a bar.
Which one does not belong pie cake brownie candy bar?
The answer is candy bar because it does not have to be baked
Is mars bar a energy bar or a candy bar?
Very good question. Most energy bars have almost the same number of calories as candy bars; the main difference is most energy bars have half the fat and sugar, plus more fiber and vitamins. But if you're not careful, you can still end up with candy-in-disguise, unless you choose an energy bar with: Around 200 calories:Limited sugar: bars with no more than 20 g of sugar--half your daily allotment. About 2 - 3 g of fiber: Fiber slows sugar's entry into your bloodstream, cushioning its impact on your blood glucose level No vitamin fortification: Or, skip your multivitamin on days you eat fortified energy bars to avoid dangerous overdosing.
What is the capacity of a candy bar?
That depends on the size of the candy bar.
Is there a candy bar called bounty?
yes but its not a candy bar its coconut chocolate bar
