Yes. It is rather a natural phenomenon. If you search and understand the process of chemical
change or reaction that results to its chemical property outcome, it has a new
formed substance. Unlike physical change or reaction it only changes in shape
or form but the substance, compound or element in the matter is till the same.
Furthermore, when chemical change is undergoing you notice the change in shape,
size and from like the physical change but there is a change in the element,
compound or substance. When you lit a fire on a paper the fire disorients,
disorganizes and disturb the former positions of the atoms and because of the
fire as catalyzer the atoms did its behavior –changing both intrinsic and extrinsic.
Weight = (mass) x (gravity)
= 200 Newtons.
(About 44 pounds. You're very skinny.)
Answer:
7.5Watts
Explanation:
Given parameters:
Force of lift = 25N
Height = 3.6m
Time = 12s
Unknown:
Power output = ?
Solution:
Power is the rate at which work is done ;
Power =
Power = = 7.5Watts
Before we start thinking about the snowball, we need to remind
each other that energy is "conserved". That means that if you
ever see energy decrease in one place, then the missing amount
must have gone somewhere, and if you ever see energy increase
in one place, then the energy that appeared must have come from
somewhere. Energy does not magically appear or disappear.
So you toss a snowball out of your hand. As you let it go, you give
it some kinetic energy, and it starts rolling along the ground.
Once you let go of it, it can't get any more energy (unless it has
some kind of little tiny engine inside it).
Kinetic Energy = (1/2) (mass) (speed)² .
and that amount can't change.
So if extra snow sticks to it as it merrily rolls along, and its mass
increases, then it must slow down.
Answer:
I am pretty sure it is A!
:D