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Jeopardy PHY101 Chapter 3 Review Study of Energy Study of Energy Work Kinetic 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 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? ANSWER Kinetic Energy $100 What is the equation for Kinetic Energy? ANSWER Kinetic Energy $200 What is the equation for momentum? ANSWER Kinetic Energy $300 What is the equation for Kinetic Energy using momentum? ANSWER Kinetic Energy $400 What is the work kinetic energy theorem? ANSWER Potential Energy $100 What is the equation for Potential Energy for gravity? ANSWER Potential Energy $200 What is the equation for Potential Energy for a spring? ANSWER Potential Energy $300 What is the potential energy in a food calorie? ANSWER Potential Energy $400 How much energy would you need to keep a 2200 lbs car moving at 60 miles/hour? ANSWER Heat & Power $100 What is a calorie? What is a BTU? ANSWER Heat & Power $200 What is internal energy? ANSWER Heat & Power $300 What is power? ANSWER Heat & Power $400 What are the units of Power? ANSWER Conservation Laws $100 What is an open system? What is a closed system? ANSWER Conservation Laws $200 What is the Law of Conservation of Linear Momentum? ANSWER Conservation Laws $300 What is the Law of Conservation of Angular Momentum? ANSWER Conservation Laws $400 What is the Law of Conservation of Energy? ANSWER Potpourri $100 At what frequency would you put energy into a system? ANSWER Potpourri $200 What is the impulse momentum theorem? ANSWER Potpourri $300 Complete the table for linear/ angular conversions Linear Displacement Velocity Acceleration Mass Force momentum Angular d v a m F p ANSWER Potpourri $400 What is torque? ANSWER Work $100 Answer What is the definition of work? Work is force acting through a displacement where force and displacement are parallel. Work = Force * Displacement = Fd Back to Jeopardy Work $200 Answer What are the units of Work? SI cgs common 1 N*m = 1 Joule 1 dyne*cm = 1 erg 1 ft*lb 1 Joule = 107 ergs =0.738 ft*lbs Back to Jeopardy Work $300 Answer What is Energy? Ability to do work. Back to Jeopardy Work $400 Answer What is the difference between kinetic and potential energy? Kinetic Energy is energy of motion. Potential Energy is energy of position. Back to Jeopardy Kinetic Energy $100 Answer What is the equation for Kinetic Energy? K.E. = ½mv² K.E. = ½m(vF² - vO²) Back to Jeopardy Kinetic Energy $200 Answer What is the equation for momentum? Momentum = mass * velocity p = mv Back to Jeopardy SI unit 1 kg*m/s Kinetic Energy $300 Answer What is the equation for Kinetic Energy using momentum? K.E. = p²/(2m) K.E. =(pF² - pO²)/(2m) Back to Jeopardy Kinetic Energy $400 Answer What is the work kinetic energy theorem? WorkNET = K.E. The units are the same for work & energy. Work + Work - K.E. K.E. Back to Jeopardy v v Potential Energy $100 Answer What is the equation for Potential Energy for gravity? P.E. = mgy or mgd P.E. =mgy Back to Jeopardy Potential Energy $200 Answer What is the equation for Potential Energy for a spring? P.E. = kSx²/2 P.E. = ½kS(xF² - xO²) Back to Jeopardy Potential Energy $300 Answer What is the potential energy in a food calorie? 1 Food Calorie = 1 kcal = 4186 J Back to Jeopardy Potential Energy $400 Answer 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 Back to Jeopardy Heat & Power $100 Answer 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 Back BTU = to 252 cal = 1055 J Jeopardy Heat & Power $200 Answer What is internal energy? EINT = resistive force * distance = fd We see this as heat. Back to Jeopardy Heat & Power $300 Answer What is power? Average Power is Work done/Time Average Power = Work/t Instantaneous Power = force * velocity = Fv Back to Jeopardy Heat & Power $400 Answer What are the units of Power? SI cgs common 1 J/s = 1 Watt = 1 W 1 erg/s 1 ft*lb/s 1 W = 107 ergs/s =0.738 ft*lbs/s 1 hp = 745.7 Watts = 550 ft*lbs/s Back to Jeopardy Conservation Laws $100 Answer 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. Back to Jeopardy Conservation Laws $200 Answer 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. Back to Jeopardy Conservation Laws $300 Answer 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. Back to Jeopardy Conservation Laws $400 Answer What is the Law of Conservation of Energy? Work Applied Force = K.E. + P.E. + EINT Energy can not be created or destroyed. Back to Jeopardy Potpourri $100 Answer At what frequency would you put energy into a system? At resonance. The frequency at which the system naturally vibrates. Back to Jeopardy Potpourri $200 Answer What is the impulse momentum theorem? J = Faveraget = p This is used with an open system. Back to Jeopardy Potpourri $300 Answer Complete the table for linear/ angular conversions Displacement Velocity Acceleration Mass Force momentum Linear Angular d v a m F p a I L Back to Jeopardy Potpourri $400 Answer What is torque? Torque is force acting through a displacement where force and displacement are perpendicular. Torque = = Force * Displacement = Fd Back to Jeopardy Thank You for playing Study of Energy Jeopardy!