The coefficient of volume expansion of glycerin is `49 XX 10^-5 K^-1` What is the fractional change in its density for a `30 ^@C` rise, in temperature?

The co-efficient of volumn expansion of a liquid is 49*10-5 C^-1 ,By what percentage does its density change on raising the temperature by 50°C?

The co-efficient of line expansion brass is 2*10^-5°C^-1 , By how much the temperature of a brass rod be increased so as increase its length by 4%.

A metal and is heated till its length becomes twice of its original length. If coefficient of linear exansion of the material of the rod is alpha , then what is the change in temperature?

If a copper wire is stretched to make 0.1% longer, what is the P.C. change in its resistance?

A hole is drilled in a copper sheet. The diameter of the hole is 4.24 cm at 27.0 ^@C . What is the change in the diameter of the hole when the sheet is heated to 227 ^@C ? Coefficient of linear expansion of copper = 1.70 xx 10^-5 K^-1 .

A carnot's engine has an efficiency of 50% when its sinks temperature is 27 degree C what must be the change in its source temperature for increasing its efficiency of 60% ?

The rate constant for the decomposition of a hydrocarbon is 2.418xx10^-5 s^-1 at 546 K. If the energy of activation is 179.9 KJ mol^-1 , What will be the value of pre-exponential factor?