Calories
Both mental and physical activities require energy, but they affect the body in different ways. Mental work can be taxing on the brain and may lead to fatigue, while physical work uses energy to move muscles and may lead to physical exhaustion. The amount of energy used depends on the type and intensity of the activity.
Force is but a reaction that is caused by the physical energy of something pushing and object.
do economiists use the term investment to signify physical or mental work
bloopperds
You would use a mental image if you were daydreaming or if you were experiencing something that your mind would not accept (Something disturbing, unbelievable, etc.). You could also use a mental image when you are trying to remember something or picture the result of an action or possibility.
a kind that you use something to think out of the answer
Disabled, or for a person with a mental disability, you can use the term "mentally challenged."
(Lassitude is a state of physical or mental weariness; lack of energy.)My own lassitude has been the enemy of my agenda.The lassitude of the workers reflected their disinterest in the project.
no, the energy needs energy to do any form of energy or work for the energy.
Physical Energy
1. The use of physical or mental energy to do something; exertion. 2. A difficult exertion of the strength or will: It was an effort to get up. 3. A usually earnest attempt: Make an effort to arrive promptly. 4. Something done or produced through exertion; an achievement: a play that was his finest effort. 5. Physics Force applied against inertia.
Activities such as exercise, running, lifting weights, and even thinking or problem-solving require the use of extra energy from the body. Any physical or mental activity that goes beyond what the body needs for basic functions like breathing and circulating blood will require extra energy.