For some metal alloys, a true stress of 345 mpa produces a plastic true strain of 0.02. how much will this alloy elongate when a true tress of 415 mpa is applied if the original length is 500 mm? the value of strain-hardening exponent, n = 0.22.

Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?

In which of the following would the particles move most rapidly? a. ice at -20 °c b. water at 20 °c c. steam at 110 °c d. boiling water e. ice at 0 °c

Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.