Find
bow much steel was actually used, if `(1)/(12)` of the steel actually used was wasted in making the tank.

Find: (i) The lateral or curved surface Area of a closed cylindrical petrol stronge tank that is 4.2 m in diameter and 4.5 m high. (ii) How much steel was actully used, if (1)/(12) of the steel actually was wasted in making the tank.

A hemishpherical tank is made up of an iron sheet 1 cm thick. If the inner radius is 1 m, then find the volume of the iron used to make the tank.

A steel tape 1 m long is correctly cailbrated for 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 termperature is 45.0^(@)C . What is the actual length of the steel rod on that day? What is the length of the same steel rood on a day when the temper ature is 27.0^(@)C ? alpha of steel is 1.20xx10^(-5)""^(@)C^(-1) ?

A steel tape Im 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 = 1.20 xx 10^(-5) K^(-1) .

Mention the names of the metals for the following: a.two mtals which are alloyed withh iron to make stainles steel. b. Two metals which are used to make jewellery.

Stainless steel is a very useful material for our life. In stainless steel iron is mixed with

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 Icel. 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: alpha_("steel ") = 1.20 xx 10^(-5) K^(-1) .

Artificial kidney is a device to remove nitrogenous waste products from the blood through dialysis. In case of kidney failure, an artifical kidney can be used. Dialysis is the procedure used in artificial kidney to replace a non-functional or damaged kidney. In the process, blood of the patient is allowed to pass through the long cellulose tubes dipped in a tank containing dialysing solution having same ionic concentration as plasma. The waste substances diffuse out of blood into the tank and the cleansed blood is returned back into the patient through a vein. What is the unit of kidney ?

A juice seller was serving his customers using glasses. The inner diameter of the cylinderical glass was 5 cm but the bottom fo the glass had a hemispherical raised portion which reduced to capacity of the glass. If the height of the glass was 10 cm, find the apparent capacity of the glass and the actual capacity of the glass.