A control rod made of yellow brass must not stretch more than 18 in. when the tension in the wire is 800 lb. Knowing that E = 15 × 106 psi and that the maximum allowable normal stress is 32 ksi, determine (a) the smallest diameter rod that should be used, (by) the corresponding maximum length of the rod.

1) when you rub your hands together quickly, the kinetic energy is converted to mechanical energy.2) thermal energy from the sun travels to earth as infrared waves.3) energy is transferred through the matter of space by electromagnetic waves. 4) when a match is burned, chemical potential energy is converted to thermal and radiant energy. 5) seismicwaves are caused by back and forth movement , or vibration, of an object. 6) mechanicalenergy in an engine changes thermal energy into kinetic energy to make a car move.

1.state2.trash3.the earth

The answer is frictional force

Good moring let me you on this question the answer the electric force  have a good day ; )