jeopardy jeopardy phy101 chapter 3 review study of energy
TRANSCRIPT
JeopardyJeopardyJeopardyJeopardyPHY101
Chapter 3 Review
Study of Energy
Study of Energy
WorkKinetic Energy
Potential Energy
Heat & Power
Conservation Laws Potpourri
$100 $100 $100 $100 $100 $100
$200 $200 $200 $200 $200 $200
$300 $300 $300 $300 $300 $300
$400 $400 $400 $400 $400 $400
Work $100
What is the definition of work?
ANSWER
ANSWER
Work $200
What are the units of Work?
ANSWER
Work $300
What is Energy?
ANSWER
Work $400
What is the difference between kinetic and potential energy?
Kinetic Energy $100
ANSWER
What is the equation for Kinetic Energy?
ANSWER
What is the equation for momentum?
Kinetic Energy $200
ANSWER
Kinetic Energy $300
What is the equation for Kinetic Energy using momentum?
Kinetic Energy$400
ANSWER
What is the work kinetic energy theorem?
Potential Energy $100
ANSWER
What is the equation for Potential Energy for gravity?
Potential Energy $200
ANSWER
What is the equation for Potential Energy for a spring?
Potential Energy $300
ANSWER
What is the potential energy in a food calorie?
Potential Energy $400
ANSWER
How much energy would you need to keep a 2200 lbs car moving at 60 miles/hour?
Heat & Power $100
ANSWER
What is a calorie?
What is a BTU?
Heat & Power $200
ANSWER
What is internal energy?
Heat & Power $300
ANSWER
What is power?
Heat & Power $400
ANSWER
What are the units of Power?
Conservation Laws $100
ANSWER
What is an open system? What is a closed system?
Conservation Laws $200
ANSWER
What is the Law of Conservation of Linear Momentum?
Conservation Laws $300
ANSWER
What is the Law of Conservation of Angular Momentum?
Conservation Laws $400
ANSWER
What is the Law of Conservation of Energy?
Potpourri $100
ANSWER
At what frequency would you put energy into a system?
Potpourri $200
ANSWER
What is the impulse momentum theorem?
Potpourri $300
ANSWER
Complete the table for linear/ angular conversions Linear Angular
Displacement d
Velocity v
Acceleration a
Mass m
Force F
momentum p
Potpourri $400
ANSWER
What is torque?
Work$100
Answer
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What is the definition of work?
Work is force acting through a displacement where force and displacement are parallel.
Work = Force * Displacement = Fd
Work$200
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What are the units of Work?
SI 1 N*m = 1 Joule cgs 1 dyne*cm = 1 erg common 1 ft*lb
1 Joule = 107 ergs =0.738 ft*lbs
Work$300
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What is Energy?
Ability to do work.
Work$400
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What is the difference between kinetic and potential energy?
Kinetic Energy is energy of motion.
Potential Energy is energy of position.
Kinetic Energy$100
Answer
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What is the equation for Kinetic Energy?
K.E. = ½mv²
K.E. = ½m(vF² - vO²)
Kinetic Energy$200
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What is the equation for momentum?
Momentum = mass * velocity
p = mv SI unit 1 kg*m/s
Kinetic Energy$300
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What is the equation for Kinetic Energy using momentum?
K.E. = p²/(2m)
K.E. =(pF² - pO²)/(2m)
Kinetic Energy$400
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What is the work kinetic energy theorem?
WorkNET = K.E.
The units are the same for work & energy.
Work + K.E. v Work - K.E. v
Potential Energy $100
Answer
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What is the equation for Potential Energy for gravity?
P.E. = mgy or mgd
P.E. =mgy
Potential Energy $200
Answer
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What is the equation for Potential Energy for a spring?
P.E. = kSx²/2
P.E. = ½kS(xF² - xO²)
Potential Energy $300
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What is the potential energy in a food calorie?
1 Food Calorie = 1 kcal = 4186 J
Potential Energy $400
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How much energy would you need to keep a 2200 lbs car moving at 60 miles/hour?
2200 lbs = 1000 kg 60 miles/hour = 27 m/s
K.E. = ½mv² = 360,000 J = 86 kcal
A medium sized cookie
Heat & Power $100
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What is a calorie?A calorie is the amount of heat need to raise 1 gram of water 1 degree Celsius.1 cal = 4.186 J
What is a BTU?A BTU is the amount of heat need to raise 1 pound of water 1 degree Fahrenheit.1 BTU = 252 cal = 1055 J
Heat & Power $200
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What is internal energy?
EINT = resistive force * distance = fd
We see this as heat.
Heat & Power $300
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What is power? Average Power is Work done/Time Average Power = Work/t
Instantaneous Power = force * velocity = Fv
Heat & Power $400
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What are the units of Power?
SI 1 J/s = 1 Watt = 1 W cgs 1 erg/s common 1 ft*lb/s
1 W = 107 ergs/s =0.738 ft*lbs/s
1 hp = 745.7 Watts = 550 ft*lbs/s
Conservation Laws $100
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What is an open system? F 0, Energy can go in or out of the system.
What is a closed system?F = 0, No energy can go in or out of the system.
Conservation Laws $200
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What is the Law of Conservation of Linear Momentum?
p = 0
The momentum of the system before the collision is the momentum of the system after the collision.
Conservation Laws $300
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What is the Law of Conservation of Angular Momentum?
L = 0
The angular momentum of the system before the event is the angular momentum of the system after the event.
Conservation Laws $400
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What is the Law of Conservation of Energy?Work Applied Force = K.E. + P.E. + EINT
Energy can not be created or destroyed.
Potpourri $100Answer
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At what frequency would you put energy into a system?
At resonance.
The frequency at which the system naturally vibrates.
Potpourri $200Answer
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What is the impulse momentum theorem?J = Faveraget = p
This is used with an open system.
Potpourri $300Answer
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Complete the table for linear/ angular conversions Linear Angular
Displacement
d
Velocity v Acceleration a Mass m I
Force F momentum p L
Potpourri $400Answer
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What is torque?
Torque is force acting through a displacement where force and displacement are perpendicular.
Torque = = Force * Displacement = Fd
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