Blog #3

Nuclear power

• used as a bomb
• powerful

Hydrogen fuel

• fuel made with oxygen and water
• used to make some machines work, its probably more environmental friendly

Coal

• produces heat and energy

Oil

• used in the 19th century to opperate machinary 
• need to create fuel

Living Green

• Solar energy
• using natural resources to make things work or used a fuel
• living to better the environment without creating to much pollution

Energy Efficiency 

• the amount of energy that is used
• using energy when needed and not abusing it

If you have a force of 26N to move a weight .85m. How much work do you do?
 equation: Uw=Fcos(angle)deltax
                                                    
F: 26N                                                     
d: .85m
angle:0
Uw=26cos(0).85
Uw= 22.1J 

A bicycle traveling initially at 7.56 m?s accelerates at the rate of .843 m/s^2 for 3.21s. What is its velocity at the end of the acceleration?
equation: vf= vi+at
vf: ?
vi: 7.56
a= .843
t= 3.21
vf= 7.56+ (.843)(3.21)
vf:10.26603

One watt if equivilant to how many joules?  
3,600,000