In a nuclear reaction, energy is released by the combination of two elements into a new element. this process is an example of

19.   In a nuclear reaction, energy is released by the combination of two elements into a new element. This process is an example of  

  A. nuclear fission.  

  B. nuclear fusion.  

  C. artificial disintegration.  

  D. natural radioactivity

Answer B

in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.