Compare between strengthening in single crystalline and polycrystalline metals 23. state the mechanisms in which the strength of polycrystalline metals can be improved 24. compare between strain hardening and work hardening

Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd question 6 options: 3000 joules 30 joules 320 joules 3200 joules

Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.