Picking up a sheet of paper . . . work done with small force
Picking up a glass of water . . . work done with moderate force
Picking up a huge boulder . . . work done with a great tremendous force
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Standing still . . .
Holding your tongue out as far as it will go . . .
Holding your arm over your head for 3 days . . .
Holding a huge boulder motionless over your head . . .
Pushing on a brick wall . . .
Pushing as hard as you can against a truck with the wheels locked . . .
. . . . . No work done at all, because the force doesn't move through a distance.
<u>Work done = (force) times (distance)</u>
If the force doesn't move, then the distance is zero, and the work done is zero.
Wind is primarily driven by differences in air pressure. These variations in air pressure are due to temperature differences caused by variations in solar energy received at the surface of the Earth.
Answer: 176.4 Joules
Explanation: Potential energy of a body is defined as the energy possessed by virtue of position.
Potential energy 
m = mass of the body = 6 kg
g = acceleration due to gravity = 
h = height of body = 3 m
Potential energy 
= 176.4Joules {
}
<span>Operant conditioning by Burrhus Frederick
Skinner, showed that people learn to behave in certain ways because of
reinforcement. This a product of a psychology school of thought, behaviorism,
which comes in the notion that whatever a person behave is what matters instead
of his mind, pioneered by John B. Watson. If a person wants to retain the
behavior, then he will do positive reinforcements example, positive stroking.
If the behavior is undesired and needs to be exterminated, then a punishment will
be instilled.</span>
