History of Atomic Structure
what is an atom
The basic unit of matter
what is energy
the ability to do work
What is kinetic energy?
Energy that is associated with motion
What is weight?
The gravitational force exerted on an object
What is spring force?
A force that act in s Compressed and stretched spring.
Who was the first scientist to propose a model of an atom
JJ Thomson
What is Mechanical energy
it is energy that has to do with motion or position
Which object has kinetic energy?
A rolling bowling ball
What is weight measured in?
Newtons
In what direction does spring force act in a neutral spring
There is no spring force in a neutral spring
What atomic model is most used today when studying atoms
Rutherford-Bohr Model
What is Electrical Energy
it is energy carried by charged particles, also called electricity
What is potential energy?
Stored energy due to an object's position or location
What do you need to know in order to calculate celestial bodies?
Mass and acceleration of gravity
What is tension?
A force created in a rope, wire or spring when it is pulled
When was the first atom developed
around 460 BC
Energy carried by sound waves
What is the relationship between velocity and its kinetic energy?
the more velocity the more KE
How does an object weight vary on other celestial bodies?
The digger the bodies the more weight and gravity
How is spring force different in a compressed spring compared to a stretched spring?
Compressed-Want to go out
Stretched- wants to go in
can aboms break
no they can no
What is Thermal energy
Energy associated with temperature of an object
What is the relationship between height of an object and potential energy.?
the higher it is more PE it has
How much does a 2o kg object weigh on Earth?(Earth's gravity=9.8 m/s2)?
196 Newtons
A light fixture hangs from a wire from the ceiling. What forces are acting on the wire that connects the fixture to the ceiling?
tension