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chapter 5

QuestionAnswer
law of conservation of energy states that when energy is transformed from energy to a other no energy is lost during the process
what causes a pendulum to eventually slow down and stop swinging? gains more friction
why does wind have energy? it has the potential to do work
what is the formula for finding mechanical energy potential+kinetic energy
sound energy, nuclear energy,electrical energy,electromagnetic energy,and chemical energy are all forms of what particles
an objects mechanical energy is the sum of what the sum of kinetic and potential energy
gravitational potential energy is mesured in what SI unit in joules and newtons
work when you exert force on an object and makes it move
when you heat a pot of water on the stove, what form of energy is added to he water thermal energy
the energy transformation that occurs on a digital clock is from electrical energy to what Electromagnetic Energy
How do you determine an object’s mechanical energy? Could you find the mechanical energy of an object? a combination of its potential energy and kinetic energy you can find find it by adding its kinetic energy and potential energy
Fusion reactions in the sun change nuclear energy into heat and light_
Determine which has more power, a handsaw or a chainsaw if the handsaw does the same amount of work on a log as a chainsaw does. Why? chainsaw has more power because the engine has more potential energy than a human.
What is the formula for determining kinetic energy? can you solve for kinetic energy? kinetic energy = ½ x mass x speed2
f you had a graph like the one on page 175 showing the kinetic energy of a 500-N diver during a dive, could you determine how the diver’s kinetic energy changes as the diver falls? yes because his kinetic energy is higher as the diver is higher off the ground. gravity also affects the kinetic energy, the higher the fall, the more gravitational force.
Created by: porter_emily
 

 



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