The difference between length of a certain brass rod and that of a steel rod is claimed to be constant at all temperatures. Is this possible ?

What is the difference between potential energy of a charge at a certain point and the potential at that point?

Write the relationship between rate constant and temperature of a reaction.

What should be the length of steel abd copper rods at 0^@C so that the difference in their lengths is 5.0 cm at all temperatures. Coefficient of linear expansion of copper is 1.7 xx 10^(-5) //^@ C and that of steel is 1.1 xx 10^(-5) //^@ C .

What is the relation between pressure and temperature of a gas at constant volume ?

Define co-efficient of linear and cubical expansion and establish a relation between them . The length of a copper wire is measured 40 cm by a metal scale when both are at the temperature of 25^@C . What would be the length of wire measured by the same scale when both are at 55^@C ? (alpha "for metal" = 1.1 xx 10^(-7) @C^(-1) and alpha for copper = 1.7 xx 10^(-7)@c^(-1))

The potential difference between the ends of a unifrom conductor in a circuits is V. If J is the current density in the conductor and l and A are its length and area of cross section respectively, then the resitivity rho of its material is