Home

 

 

School blocks YouTube?
Use file below.

Black_hole

 

Mass/Energy Notes

 

 

Conservation Of
Mass
and Energy
-

 

 

 


Matter canít be
 
Created or Destroyed
 
... but can be

 
converted into energy

 according to the formula ...

 

 

Mass (kg) to Energy (J)

 

E

=

m

 c2

Units (J)

 

(Kg)

m/s

 

c - speed of light =
3.00 x 108 m/s

 

Einstein talks
about E = mc2

 

 

 

Nuclear Fireball

www.wpclipart.com

 

 

 

A neutron splits a uranium nuclei.
What is this nuclear reaction called?

wpclipart.com

 

 

 

Fission - splitting of a large nuclei into 2 or nuclei

 

 

 

www.wpclipart.com

 

 

 

Ex) ***Energy that can be obtained from converting 2.0 Kg to energy?

 

 

E

=

m

c2

Units (J)

 

(Kg)

m/s

 

 

E = 2.0 Kg(3.00 x 108 m/s)2

 

 E = 1.8 x 1017 Joules

 

 

Our Sun

wpclipart.com

 

 

 

To convert universal mass units to energy in MeV

1 proton

(universal mass unit)

converts

to 9.31 x 102 Mev

or

931 MeV

(p. 1 Reference)

 

 

 

(Mass/Energy Relationship)

 

Typical Regents Question ...

Ex) How much energy can be generated when 2 universal mass units are completely converted into energy?

 

1 universal mass unit = 931 MeV

 

Answer: 1862 MeV
(each universal mass unit
 converted produces 931 MeV)

 

 

 

Forces Inside
the Nucleus

 

 

Enrichment

The Elements:
Forged in Stars

NOVA

Elements Forged_in_Stars

Author - "Fusion, which occurs when atomic nuclei combine to form new elements, is extremely powerful. All the stars in the universe, including the Sun, are nuclear furnaces fueled by fusion. Through fusion, stars are responsible for forming all the naturally occurring elements heavier than hydrogen and helium -- before stellar nucleosynthesis, only the lightest elements existed in the universe. This video segment adapted from NOVA illustrates the critical role that stars play in creating the elements."

 

Finely_Tuned_Universe

creationofuniverse.com

A is for Atom

This movie is part of the collection:
Prelinger Archives

Producer: Sutherland (John) Productions
Sponsor: General Electric Company
Audio/Visual: Sd, C
Atomic-nuclear: Energy;
Physics; Animation

Creative Commons license:
Public Domain

 

©Tony Mangiacapre.,
- All Rights Reserved [Home]
Established 1995
Use any material on this site (w/ attribution)