rainfall of 0.896 cm. was recorded in 7 hours. what was the average amount of rain per hour?

A car covers a distance of 89.1 km in 2.2 hours. What is the average distance covered by it in 1 hr.

The count rate from a radioactive sample falls from 4.0 xx 10^(6) per second to 1.0 xx 10^(6) per second in 20 hours. What will be the count rate 100 hours after the beginning?

If a metallic circular plate of radius 50 cm is heated s that its radius increases at the rate of 1 mm per hour, then the rate at which, the area of the plate increases ("in" cm^(2)// "hour") is

A person crosses a 600 m long street in 5 minutes. What is his speed in km per hour?

Narendra reads of 1/4 a short novel in 1 hour. What part of the book will he have read in 2"" 1/2 hours?

A truck covers a distance of 92.5 km in 2.5 hours. If the truck is travelling at the same speed through out the journey what is the distance covered by it in 1 hour?

In a zero order reactionn 47.5% of the reactant remains at the end of 2.5 hours. The amount of reactant consumed in one hour is

A reaction is 50% completed in 2 hours and 75% conmpleted in 4 hours. What is the order of the reaction.