If the price of tea increased by 20% by what percent must the consumption reduced to keep the expense the same?

If the radius of earth strinks by one percent it mass remaining the same by what percent will the acceleration due to gravity change at surface.

If the momentum of a partical increased by 50%,what is corresponding increases kinetic engery?

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 .

. A wire is replaced by another wire of same length and material but of twice diameter. (/) What will be the effect on the increase in its length under a given load? (//) What will be the effect on the maximum load which it can bear?

A steel wire of diammeter 2 mm is pulled to increase its length by 1% what is the restoring force developed in it if young's modulus for steel 2 *10^12 dynes/ cm ^2 .

The length of a wire is reduced by half. What will be the effect on the increase in its length under a given load?

A zero order reaction is 50% complete in 10 mins. What percentage would be completed at the end of 25 mins? In how many mins would the concentration be reduced to zero?

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 .