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In physics, energy is required for work to be performed.
If you have a machine that you want to just sit somewhere, it doesn't need any energy.
If you want a machine to actually do something, then it needs energy.
In space, a satellite can travel millions of miles without any added energy (just the energy required to set it on its path). In a sense, a form of perpetual motion.
On earth, true perpetual motion doesn't exist. If one doesn't want a machine to stop due to friction and other forces, then one must add energy.
What else can I help you with?
What is the brief definition of energy?
This is a difficult subject. A brief - and very informal - definition is that energy is "the ability to do work". Machines, humans, and other living beings, need energy to move, or to get things done. It is important to note that energy exists in many different forms (heat, movement, sound, light, chemical energy, and others), and that it can be converted from one form to another.
What non living thing that require energy?
everything requires energy. It takes energy to form chemical bonds, it takes energy to break them. Everything has kinetic or potential energy. Cars, tides, earth's rotation, wind, sunlight, etc etc.
Why is there a need for energy transform from one another?
There WILL be energy transformations, whether we need it or not. Living beings, however, depend on energy transformation to live. We get energy from our food, which we "use up" and eventually convert to heat energy.
Why do living things need energy and where do they get it?
Living things need energy to do stuff like grow, breathe, walk around, dress themselves, sleep, procreate and do their homework. They get it by eating or by soaking up soil and sunlight. If they don't, they soon cease to be living things, and they no longer need to worry about energy.
Do only humans need energy to survive?
All living creatures need energy to survive. Energy is anything that makes something move or change, not only carbohydrates in food like some people think. For instance, your heart needs energy to beat, and your brain needs energy to think. Animals, and even tiny organisms, need some sort of energy to survive.
Why do living things and machines need energy?
living things need energy because they cannot live longer without energy
What is the benefit of carbs?
Carbohydrates provide energy, which all living beings need.
Why does living beings need food?
because food gives us energy
Do you need to move and use energy to be considered living?
No. Using energy is indeed one of the characteristics which living beings are expected to have. Moving, on the other hand, only applies to SOME living beings - plants (and some animals, such as sponges) usually don't move, but are still considered living beings.
What will happen to living things if there is no heat energy?
All the living beings would die... All the humans and animals would die by freezing... Because we need heat.
Why machines need fuel for their work?
Machines need fuel to convert stored energy into usable energy, enabling them to perform work. This fuel can be in various forms, such as electricity, gasoline, or other energy sources, which power the machine's components and drive its operations. Without fuel, machines lack the necessary energy to function, much like living organisms require food for energy. Essentially, fuel acts as the driving force that allows machines to carry out their intended tasks efficiently.
What is life's need for energy?
Living beings are, in a way, similar to engines, and they need fuel - for example, to move around, to grow, etc. Without energy, no change is possible. A lifeless statue doesn't need energy; anything that moves, grows, or undergoes any other type of change, does.
Why is the sun necessary to all organisms in an ecoystem?
Second Law of Thermodynamics. Roughly speaking, to get ANYTHING done, you need to have available energy. All machines, but also all life forms, need energy.The Sun is the ONLY significant source of freely available energy here on Earth. Most other forms of energy (including wind, potential energy from falling water, etc.) derive from solar energy. The few other forms of energy are either not significant, or are difficult to access for living beings.
Do living thing need energy?
yes all living things need energy
Why do you need to water plants?
Plants need water; in fact, all living beings need water.
Why does cell respiration take place?
All living beings need energy to maintain there lives. Respiration is chemically oxidation of big molecules to release energy. This burning of fuel in a cell (or organism) is called respiration.
Do you find that all living being need same kind of food?
Do all living beings need same kind of food to eat
