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Energy Questions and Answers (Q&A)

C is the answer to this question. It is true that energy will always be there. There are times when kinetic will turn into potential energy but it would just need another item that can turn it into kinetic energy.

The given example is a bouncing ball. If the ball’s energy will never change, it would continue bouncing for the rest of time. It does not bounce forever.

There are different things that may happen to it. When it is stopped, then it will not be able to bounce anymore. Most of the time, the energy from the bouncing ball can transform into different forms of energy.

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The correct answer to this question is C. The rate of motion of the molecules depends on the kinetic energy of the particles; therefore kinetic energy is directly proportionate to the temperature. As the temperature increases, the kinetic energy will also increase at the same rate.

This will increase the motion of molecules of matter at the same rate as well, and graph 3 shows this through a steady increase in the rate of molecules in motion (y-axis) as the temperature increases (x-axis). The other graphs do not properly show this steady and proportionate increase, so therefore graph 3 is correct.

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The correct answer to this question is A, 0.5J. Kinetic energy is the energy of a body or object that it holds due to motion. This energy is used in physics and is gained during acceleration. The kinetic energy remains the same, unless the speed changes. The J in the answer stands for joule which is the SI unit.

This unit is apart of the International System of Units. It is named after physicist James Prescott Joule. Kinetic energy is abbreviated with the symbols KE, Ek, or T. To find kinetic energy, the formula KE = 0.5 x mv2 can be used.

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Potential Energy increases if our height increases.

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The correct answer is option D
In exothermic reactions, more energy is involved when bonds are formed in the products than used to break the bonds reactant.

If the total energy required to break bonds in the reactants is more than the energy released when new bonds are formed in the product, it is known as an endothermic reaction.

Option A and B are wrong because it is not the number of bonds broken or formed that matter. It is the total energy required to break or make bonds that matter in exothermic and endothermic reactions.
Hope this helps.

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The answer to this is D. The phosphate bonds will start to break down. They are the easiest targets probably because the number of bonds is too much. This may also have more than the usual amount of energy that is required. The enzyme that will have the ability to convert ATP to ADP is called synthase. Take note that the change occurs when the protons start to go through the inner mitochondrial membrane.

Take note that the chemical bonds are usually meant to be broken so that new bonds that are composed of different molecules will become available. No matter what type of bond will be broken, it will always take energy in order to break down that bond.

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B is the answer to this question. It is already a known fact that the molecules of solids are usually packed tight. This explains why they are able to maintain their own shape and size. Unlike liquids with molecules that have some spaces in between, solids will have their own definite shape.

The other illustrations may show the other states of matter. Aside from solid and liquid, the other states of matter are gases and plasma. There are also a few people who are saying that there may be more than 4 states of matter that are available but nothing is definite yet. There are still studies that are ongoing about this.

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The correct answer to this question is B, 2. There are three states of matter and solids are one of them. The other two states are liquid and gas. Out of all the three states, solids are tightly packed together. Compared to the other three images, image B is the most packed together, making it the correct answer.

Liquids are close, but not as close together as solids, making image 4 a representation of fluids. Gases are spread all over, like both images 1 and three show, but there would be more than two of them. This indicates that image 3 would be a representation of a gas.

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I personally think that the answer is that so e get converted to sound energy and escapes through its surroundings, because thermal in a ball is not really there...

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B is the answer to this question. The force is friction should be considered and related to the normal force. The coefficient of friction is 0.728. 0.728 will be multiplied to the mug of the root beer which is 1.49 kg and the normal force which is 9.8 m/s/s.

The equation will look like this: (0.728) (1.49 kg) (9.8 m/s/s). You will get 10.6 n as the answer. This will help you compute for the n force and the equation will be 11.9 N - 10.6 n = 1.27 n. Now you need to solve for the kinetic energy when you already have the n force. The formula you will use is: keb = w = f d cos(theta) or (1.27 n) (1.42 m) cos(0 deg). The answer will be 1.80 J.

Take note that the mug will start to slow down because of the friction so you would need to compute that using this formula: w = change in ke f d cos(theta) or -1.80 j (10.6 n) (d) cos(180 deg). The answer to this will be -180 J. This will be computed along with the earlier answers: -1.80 j - (10.6 n) (d) = -1.80 j d = 0.170 m.

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