Jeopardy Jeopardy PHY101 Chapter 3 Review Study of Energy

Work Kinetic Energy Potential Energy Heat & Power Conservation Laws Potpourri $100 $200 $300 $400

Work $100 What is the definition of work? 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 LinearAngular Displacementd Velocityv Accelerationa Massm ForceF momentump

Potpourri $400 ANSWER What is torque?

Work $100 Answer Back to Jeopardy 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 Answer Back to Jeopardy What are the units of Work? SI 1 N*m = 1 Joule cgs 1 dyne*cm = 1 erg common 1 ft*lb 1 Joule = 10 7 ergs =0.738 ft*lbs

Work $300 Answer Back to Jeopardy What is Energy? Ability to do work.

Work $400 Answer Back to Jeopardy 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 Back to Jeopardy What is the equation for Kinetic Energy? K.E. = ½mv²  K.E. = ½m(v F ² - v O ²)

Kinetic Energy $200 Answer Back to Jeopardy What is the equation for momentum? Momentum = mass * velocity p = mv SI unit 1 kg*m/s

Kinetic Energy $300 Answer Back to Jeopardy What is the equation for Kinetic Energy using momentum? K.E. = p²/(2m)  K.E. =(p F ² - p O ²)/(2m)

Kinetic Energy $400 Answer Back to Jeopardy What is the work kinetic energy theorem? Work NET =  K.E. The units are the same for work & energy. Work + K.E.  v  Work - K.E.  v 

Potential Energy $100 Answer Back to Jeopardy What is the equation for Potential Energy for gravity? P.E. = mgy or mgd  P.E. =mg  y

Potential Energy $200 Answer Back to Jeopardy What is the equation for Potential Energy for a spring? P.E. = k S x²/2  P.E. = ½k S (x F ² - x O ²)

Potential Energy $300 Answer Back to Jeopardy What is the potential energy in a food calorie? 1 Food Calorie = 1 kcal = 4186 J

Potential Energy $400 Answer Back to Jeopardy 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 Answer Back to Jeopardy What is a calorie? A calorie is the amount of heat need to raise 1 gram of water 1 degree Celsius. 1 cal = 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 Answer Back to Jeopardy What is internal energy?  E INT = resistive force * distance = fd We see this as heat.

Heat & Power $300 Answer Back to Jeopardy What is power? Average Power is Work done/Time Average Power = Work/  t Instantaneous Power = force * velocity = Fv

Heat & Power $400 Answer Back to Jeopardy 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 = 10 7 ergs/s =0.738 ft*lbs/s 1 hp = Watts = 550 ft*lbs/s

Conservation Laws $100 Answer Back to Jeopardy 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 Answer Back to Jeopardy 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 Answer Back to Jeopardy 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 Answer Back to Jeopardy What is the Law of Conservation of Energy? Work Applied Force =  K.E. +  P.E. +  E INT Energy can not be created or destroyed.

Potpourri $100 Answer Back to Jeopardy At what frequency would you put energy into a system? At resonance. The frequency at which the system naturally vibrates.

Potpourri $200 Answer Back to Jeopardy What is the impulse momentum theorem? J = F average  t =  p This is used with an open system.

Potpourri $300 Answer Back to Jeopardy Complete the table for linear/ angular conversions LinearAngular Displacementd  Velocityv  Accelerationa  MassmI ForceF  momentumpL

Potpourri $400 Answer Back to Jeopardy What is torque? Torque is force acting through a displacement where force and displacement are perpendicular. Torque =  = Force * Displacement = Fd

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