Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions



This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.

   Total energy = KE + P.E. + Thermal Energy + Electrical Potential energy + ...    

    Energy is said to be the capacity to do work.  Generally work is done by physical movement of a body.  Hence, the kinetic energy is involved.  When any  potential energy changes, that is converted usually into the kinetic energy. 

    Usually, moving object does work.  Hence the decrease or increase in the kinetic energy is the amount of work done by the body or the external agent (force) respectively.  Other components of energy remains same.   Other energies convert to kinetic energy and kinetic energy does work.

      Work is done when a force moves (or slows down) a body through a distance.  Then kinetic energy is changed.  Also, work is done when a gas expands or compresses varying in pressure and volume.  When a spring is  compressed, there is work done, but by movement of some object or absorbing kinetic energy of an agent.

2 3 2
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts