A frog is slipping into a well from upper surface at rate of 3 meters per minute, after 5 minutes what is the position of the frog in the well? (Con)

Air is discharging from a large spherical balloon at the rate of 4 cubic meters per minute. Then, the rate at which the surface area is shrinking when the radius of the balloon is 8 m, is

A lift descends into an underground floor at the rate of 6 meters per minute If the decent starts from 10 meters above the ground level,how much time will it take to descend 350 meters ?

A certain sample of a radioactive material decays at the rate of 500 per second at a certain time. The count rate falls to 200 per second after 50 minutes. (a) What is the decay constant of the sample ? (b) What is its half-life?

Water is pouring into a cuboidal reservoir at the rate of 60 litres per minute. If the volume of reservoir is 108 m^3 . Find the number of hours it will take to fill the reservoir.

A spherical balloon is filled with 4500pi cubic meters of helium gas. If a leak in the balloon causes the gas to escape at the ratio of 72pi cubic meters per minute, then the rate (in meters per minute) at which the radius of the balloon decreases 49 minutes after the leakage began is

Abhi's heart beat is 72 per minute. Then what is his pulse rate?

An elevator descends into a mine shaft at the rate of 6 meters per minute. If the descends starts from 10m above the ground level, how long will it take to reach -350m.