minute minder #5 batman is trying to catch a woman that fell off a building. her velocity is 30m/s....
TRANSCRIPT
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Minute Minder #5 Batman is trying to catch a
woman that fell off a building. Her velocity is 30m/s. Batman only has 1/3 second to catch the woman before she hits the ground. The woman weighs 75Kg. Batman does a one handed catch. What is the force exerted on his arm.
(hint. Solve for average acceleration. Then solve for force.)
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TYPES OF ENERGY
• Mechanical• Thermal• Chemical• Electrical• Electromagnetic• Nuclear
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What is Mechanical Energy?o Energy due to a object’s motion
(kinetic) or position (potential).
The bowling ball has mechanical energy.
When the ball strikes the pins, mechanical energy is transferred
to the pins!
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Examples:
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Examples of Mechanical Energy
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Thermal Energy
o The total energy of the particles in an object.
o Heat energy
A hot object is one whose atoms and molecules are excited and show
rapid movement.
A cooler object's molecules and atoms will show less movement.
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Examples:
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Chemical Energy
o Potential energy
stored in chemical bonds that hold
chemical compounds together.
The chemical bonds in a matchstick store
energy that is transformed into
thermal energy when the match is struck.
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Examples:
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Examples of Chemical Energy
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Electrical Energy
The energy of moving electric
charges.o Easily transported
through power lines and converted into other forms of
energy
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Examples:
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Electromagnetic Energy
The energy of light and other forms of radiation. (waves)
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Examples:
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Nuclear Energy
The potential energy stored in the nucleus of the atom.Fusion – is the joining together of atoms, (sun)Fission – is the splitting of an atom. (nuke, nuclear plants)
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Examples:
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QUIZ TIME!What type of energy cooks food in a microwave oven?
What type of energy is the spinning plate inside of a microwave oven?
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QUIZ TIME!Electrical energy is transported to your house through power lines.
When you plug an electric fan to a power outlet, electrical energy is transform into what type of energy?
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QUIZ TIME!
What energy transformation occurs
when an electric lamp is turned on?
ELECTRICAL ENERGY
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What types of energy are shown below?
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What type of energy is shown below?
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What types of energy are shown below?
Electrical, Mechanical andElectromagnetic Energy
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What type of energy is shown below?
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What type of energy is shown below?
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Draw a flow map showing the flow of energy transformations in a car from starting vehicle to driving. You should have 5 different types of energy.
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Energy Transfer
Chemical
Electrical
Electrical
Electrical
Sound(mechanical)
Light(Electromagnetic)
ThermalMechanical