Artículos de esta sección

• Heat transfer in fluids (2909)

  5 de enero de 2015 , por F_y_Q

  How is heat transferred in the air?

• Matching terms: types of energy and systems (2733)

  10 de octubre de 2014 , por F_y_Q

  Define, in your own words, what energy is and provide two examples of systems; one with kinetic energy and another with gravitational potential energy. Match the terms to these two groups (letter-number):

  a) Combustion of diesel ; b) Friction between a match and sandpaper ; c) A bee flying ; d) A plane that took off a minute ago ; e) A pole when it is completely bent.

  1) Kinetic energy ; 2) Elastic potential energy ; 3) Mechanical energy ; 4) Chemical energy ; 5) Internal energy

• Energy transformations (1929)

  7 de noviembre de 2012 , por F_y_Q

  What type of energy is involved in each of the following situations?

  a) Wood is burning in the fire.

  b) A radio station is broadcasting its usual program. Waves are coming out of its antenna.

  c) A mobile phone is playing music.

• Definition of energy (1928)

  7 de noviembre de 2012 , por F_y_Q

  Define, with your own words, what energy is. Explain three different types of energy.