Units
All of our energy equations include mass. What units must our mass be measured in?
kg
Sing a Christmas carol for 5 seconds
Many options
What units are gravitational potential energy measured in?
Joules
What would possess more kinetic energy; a car moving at 10m/s or a baseball thrown at 10m/s?
Car
How do you convert oC to K?
+273
How many joules are in 1 kilojoule
1000
Which popular Christmas drink is also called ‘milk punch’?
Eggnog
What does it mean if an object has potential energy
The object has the ability to do work later on when the potential energy is released.
What is kinetic energy?
The energy of a moving object
Why can delta T be in either K or oC?
The difference between the final and initial temperature is the same in K and oC
What are the units required for the kinetic energy forumla?
K.E. = 0.5mv2
K.E. = J
m = kg
v = m/s
How do you say "Merry Christmas" in Spanish?
Feliz Navidad
Quick Calc! (15 sec)
What is the gravitational potential energy of a 1kg ball that is held at a height of 3m? Include units!
29.4J
What does the law of conservation of energy state?
Energy cannot be created or destroyed
Explain how thermal energy relates to the kinetic energy
The average kinetic energy of the particles is what results in the temperature/thermal energy of an object
What are the units of specific heat capacity?
J/kg*K
Santa has 9 reindeers. Name all of them
Dasher, Dancer, Prancer, Vixen, Comet, Cupid, Donner, Blitzen, and Rudolph.
What has greater gravitational potential energy at the same height; a kilogram of bricks or a kilogram of feathers?
The same! Both a kilogram
Quick Calc! (15 sec)
What is the kinetic energy of a 90kg cheetah moving at a velocity of 15m/s?
10125J
Quick Calc! (15 sec)
A 0.4kg piece of copper (C = 385j/kg*K) is heated by 15K. What is the heat provided? Include units
2310J
Quick Calc! (25 sec)
Convert 40km/hr in m/s!
11.1m/s
In Home Alone, where are the McCallisters going on vacation when they leave Kevin behind?
Paris
Free Space
Free space
Quick Calc (30 sec)
Convert 20m/s to km/hr
72km/hr
Heat is known as a process quantity, what does that mean
It is defined in the context of something "happening". This "something" is the process of heat transfer. Heat must be transferred, something doesn't simply have heat.