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A positive energy balance is when you're taking in the correct amount of calories according to your age, height and gender and expending the appropriate number of calories. A negative balance is when you're not. I know which school you're from, I had to do this as an assignment too...
There are several different energy equations. For kinetic energy: KE=1/2mv2 For gravitational Potential energy: PE=mgh For rest potential energy: E0=mc2 m=mass, v=velocity, g=9.80m/s2 (acceleration of gravity on Earth) , h=height, c=2.998*108m/s (The speed of light in a vacuum)
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It is the balance between nutrients provided to the body and energy spenditure. If nutrients create more calories of what you burn, fats are stored and at some time obesity will appear. If you burn more calories of what you get in nutrients, loss of fats and muscle will happen until malnutrition disorders surge.
Positive energy balance means that you are consuming mre calories than you burn. It is good if you are tyring to gain weight.
Her potential energy has been increased by 750 calories.
calories were never "made." they are simply the amount of energy required to raise the temperature one gram of water one degree celsius.
Calories don't "produce" energy; calories are a UNIT OF ENERGY.
In sports performance, energy balance is required so that someone has enough energy to remain active over a standard period. It prevents people from using too much energy and getting burnout before time elapses.
Energy balance is important for maintaining a healthy weight. The amount of energy or calories you get from food and drinks (energy IN) is balanced with the energy your body uses for things like breathing, digesting, and being physically active (energy OUT):The same amount of energy IN and energy OUT over time = weight stays the same (energy balance)More energy IN than OUT over time = weight gainMore energy OUT than IN over time = weight lossTo maintain a healthy weight, your energy IN and OUT don't have to balance exactly every day. It's the balance over time that helps you maintain a healthy weight.You can reach and maintain a healthy weight if you:Follow a healthy diet, and if you are overweight or obese, reduce your daily intake by 500 calories for weight lossAre physically activeLimit the time you spend being physically inactive
Radiation balance is the balance between incoming energy and outgoing energy