A wire of length 2m and cross-section area of 10−42 is stretched by a load 102kg. The wire is stretched by 0.1cm. Calculate longitudinal stress, strain and young’s modulus of the material of wire?

Who was the first scientist to measure speed as distance over time?

In the first law of thermodynamics, triangle e=q-w, what does q stand for

The standard cell potential (e°cell) for the reaction below is +0.63 v. the cell potential for this reaction is when the concentration of zn2+ = 1.0 m and the concentration of pb2+ = 2.0 x 10-4 m. pb2+(aq) + zn(s) > zn2+(aq) + pb(s)