Define mechanical energy. using the example of the pendulum, explain how kinetic and potential energy relate to the mechanical energy at different positions.

Mechanical energy is the sum of potential energy and kinetic energy present in the components of a mechanical system. It is the energy associated with the motion and position of an object. All energy can be expressed in Joules (including thermal energy

Enzyme make a hormone as a catalyst

Its strengthits conductivity of heat and electricity its shiny colourmalleable and ductility