The Answer is B
we have this formula (f.d.cosθ)
50 kg ----> mg.d.cos90 ----> 500 2 1=1000 J
25 kq ----> mg.d.cos90 -----> 250 4 1 =1000 J
Renewable energy is energy that is collected from renewable resources, which are naturally replenished on a human timescale, such as sunlight, wind, rain, tides, waves, and geothermal heat. Just as there are many natural sources of energy, there are many renewable energy technologies. Solar is one of the most well known, wind power is one of the most widespread, and hydropower is one of the oldest. Other renewable technologies harness geothermal energy, biomass energy or tidal/wave energy to produce heat or electricity. Renewable energy is not a resource that is formed at a rate that is much slower than the rate at which it is being used. Let's put it this way. If we were to use coal, oil or natural gas in such a way so that they are formed at a rate which is equal to the rate they're being used at, it wouldn't necessarily make them renewable!
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We get energy from the sun through the vitamin D.
There are different ways that energy can be defined. A lot of people feel that energy is something that is used by people in order to do different types of tasks. Having enough energy will allow people to do not only physical tasks but also mental tasks. Some people who do not get enough nutrients may notice that they are not as energetic as they should be.
People’s well-being can be affected when they are not energetic enough. To get enough energy, it is best to look for food sources that can provide that. At the same time, getting enough rest and sleep will also be important to replenish people’s used energy.
There is a quarter of the universe that is known to contain dark matter. This type of matter is hard to detect because it cannot be seen but you will know that it is there. How? This is through the gravitational pull that it has. It will pull all of the matter that is around it and some say that it would be the process to oblivion. Some feel that dark matter and dark energy are the same but they have some differences.
Dark energy, on the other hand, pushes away items from it. It will have a repelling force over other types of matter. They are important because they keep all of the galaxies together. If they would be removed, the galaxies would cease to exist.
There are actually different forms of energy that are available. Some are saying that there may be other forms of energy that have not been discovered yet but there are some forms that are common and people can be familiar with. There are six forms that are usually considered such as chemical, electric, mechanical, sound, radiant, and atomic. There are also some people who are saying that dark energy exists.
There may not be enough information to provide this but this is true. Dark energy does exist. In fact, it is the reason why the earth is still continuing to rotate on its own and revolve around the sun. The solar system may be in chaos without it.
There are so many forms of renewable energy. These forms of renewable energy may depend on sunlight in order to work. For example, there are some hydroelectric power plants that would require heat first in order to move. Wind energy will also only occur when there is enough heat that is generated by the sun. There are some forms of energy that are considered non-renewable.
For example, the fuel that comes from fossils will not last forever There are some who are stating that the fossils are getting scarcer. The possibility that fuel will be gone after a few more years is possible especially if people would not switch to other more renewable sources of energy.
Some people are confused if life itself can be considered an energy. I honestly believe that it can be a form of energy. There are some people who are full of life who are able to accomplish so many things. They are able to plan the things that they are going to do because they are inspired.
Those who do not have enough life or are thinking negatively will also be affected. They are unable to have fun with other people. As much as possible, they try to isolate themselves. Positive and negative energy also exist. People can always choose to have a positive life energy or a negative life energy.
It should be remembered that there are different energy sources that are available. All of these sources may impact the world in different ways. Using electricity which is a type of energy can be bad for the environment. There are some people who are aware of this so they try their best to conserve electricity.
Take note that we can also emit a certain form of energy depending on your vibe. Whenever we move, we are creating energies. Electricity is considered to be non-renewable because it comes from fossil fuels. There was a time when fossils were abundant but the more people that learned about fuel, the harder it would be.
It is already a well-known fact that it is the brain that will use most of the energy that the body is able to gather from different food sources. This explains why you may find it hard to function when you have not eaten yet. The body needs to have enough energy that will burn whenever you need to do something.
The brain usually takes about 20% of the total amount of energy that we have in our bodies. This explains why people usually feel physically tired even if they have just stayed inside the office. The fact that their brains are working can be enough to make them lose a significant amount of energy.