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 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 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 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% ?

A large steel wheel is to be fitted on to a shaft of the same material. At 27 ^@C , the outer diameter of the shaft is 8.70 cm and the diameter of the central hole in the wheel is 8.69 cm. The shaft is cooled using ‘dry ice’. At what temperature of the shaft does the wheel slip on the shaft? Assume coefficient of linear expansion of the steel to be constant over the required temperature range: a_ steel = 1.20 xx 10^-5K^-1 .

A steel tape 1m long is correctly calibrated for a temperature of 27.0 ^@C . The length of a steel rod measured by this tape is found to be 63.0 cm on a hot day when the temperature is 45.0 ^@C . What is the actual length of the steel rod on that day? What Is the length of the same steel rod on a day when the temperature is 27.0 ^@C ? Coefficient of linear expansion of steel = 1.20xx10^-5 K^-1 .

The decomposition of A into product has value of k as 4.5xx10^3 s^-1 at 10^@C and energy of activation 60 kJ mol^-1 . At what temperature would k be 1.5xx10^4 s^-1 ?

Answer the following questions based on the P-T phase diagram of CO_2 : Describe qualitatively the changes in a given mass of solid CO2 at 10 atm pressure and temperature 65^-@C as it is heated up to room temperature at constant pressure

What is the pressure inside the drop of mercury of radius 3.00 mm at room temperature? Surface tension of mercury at that temperature (20^@C) is 4.65 xx 10^-1 N m^-1 . The atmospheric pressure is 1.01 xx10^-5 Pa. Also give the excess pressure inside the drop.