What would happen to the gravitational force if the mass is doubled?
Gravitational force would double
What would happen to the gravitational force is the distance is doubled? Tripled?
Gravitational force would be 1/4 times. Tripled is 1/9 times the force.
p=mv Momentum (kg*m/s)= Mass (kg) x velocity (m/s)
Massive object = Large momentum?
No because the object could not always be in motion.
Transfer of energy that occurs when an object is moved with a force over a distance. w=fd Work (J) = Force (N) x Distance (m)
The rate at which energy is changed from one form to another. p=w/t Power (W) = Work (J)/Time (s)
The ability to do work or cause change
Energy in motion ( roller coaster going down the hill) KE= 1/2mv^2 Kinetic Energy (J) = 1/2mass (kg) x velocity (m/s) ^2 SI unit is Joules
Energy that is stored EX: Apple in a tree GPE=mgh GPE (J) = mass (kg) x gravity (m/s^2) x height (m)
Law of Conservation of Energy
Energy cannot be created or destroyed; it may be transformed from one form into another or transferred from one object to another, but the total energy never changes. ME= KE+PE
Average KE per molecule in a substance
The total energy (kinetic + potential) of all the molecules in a substance.
Iceberg vs. Pot of Boiling H2O
Boiling H2O has a higher temperature, but the iceberg has higher thermal energy because it is more massive.
The thermal energy transferred from one substance to another due to a temperature difference between the 2 substances. (Joules) H=mcT Heat (J) = mass (g) x Specific Heat Change (J/g*c) x Specific Temp. (C)
Specific Heat Capacity
The quantity of heat required to change the temperature of a unit mass (g) of the substance by 1 degree (Celsius)
Transfer of heat E by the collisions between particles in a substance. EX: Finger⇒Ice
Transfer by motion of a fluid EX: In a pot, warmer liquids move away from the heat source and cooler moves toward it.
Transfer by heat waves EX: Sun to Earth
Want to see the other 19 Flashcards in CUBA #2?JOIN TODAY FOR FREE!