Orders of Magnitude
One heartbeat is _____ Joule
1 Joule
A force is
direction of the change in motion
Glow sticks are an example of what type of chemical reaction?
Exothermic
If the distance between two electrons is doubles, what would happen to the electric force between them?
The electric force would be 1/4 as strong
Electric charges are measured in
coulombs
First Atomic Bomb
10+14
Joules
Combining hydrogen and oxygen to make water creates
energy
Suppose the electric field between two points separated by 13 meters is 63 Volt/m. What is the electric potential (in Volt) between the two points? Use exact numbers; do not estimate.
819
Electromagnetic energy is measured in
Joules
Human Body, Daily
10+06
an 89 Watt lightbulb is used for 1 minute, how many joules are used?
5,340
What happens energetically when chemical bonds are formed?
Forming bonds releases energy
Volt is named after
Alessandro Volt
Benjamin Franklin's kite was struck by lightening
Annual output of the sun
10+34
what is energy?
the capacity to do work
What is the energy density (energy per mass) of gasoline ?
45 MJ/kg
Some properties of energy flow in a circuit include
electrons flow in the wires.
energy flows outside and parallel to the wires
the electric and magnetic lines are always at 90 degrees to each other.
energy flows from both terminals of a DC battery to the load and never returns to the battery.
About ___% of our electrical energy comes from coal
37%
Largest Atomic Bomb
10+18
A Vector has these properties:
Magnitude & Direction
You are given 12 grams of an unknown substance. How you would accurately determine the precise composition of the unknown substance?
Excite a small portion of it and identify the spectral lines
A moving charge is called
a current
world's largest solar thermal plant is in
Gila Bend, Arizona