From a certain apparatus, the diffusion rate of hydrogen has an average value of `28.7 cm^3 s^-1`. The diffusion of another gas under the same conditions is measured to have an average rate of `7.2 cm^3 s^-1`. Identify the gas

Edge of a cube is increasing at the rate of 2 cm/s. The rate of change of its volume when the edge is 3 cm is :

The radius of a right circular cylinder increases at a constant rate. Its altitude is a linear function of the radius and increases three times as fast as the radius when the radius is 1 cm and the altitude is 6\ cm . When the radius is 6 cm , the volume is increasing at the rate of 1\ cm^(3)//s . When the radius is 36 cm , the volume is increasing at a rate of n\ cm^(3)//s . What is the value of n ?

The molecular weight of a gas which diffuses through a porous plug at 1//6^(th) of the speed of hydrogen under identical condition is:

A round table cover has six equal designs as shown in fig. If the radius of the cover is 28 cm, find the cost of making the designs at the rate of ? 0.35 per cm^2 . (use sqrt 3=1.7)

The radius of an air bubble is increasing at the rate of 1/2 cm/s . At what rate is the volume of the bubble increasing when the radius is 1 cm?

Identify the reaction order for each of the following rate constants - k=7.1 xx 10^-5 s^-1

From a cylindrical drum containing oil and kept vertical, the oil leaking at the rate of 10cm^(3)//s. If the radius of the durm is 10 cm and height is 50 cm, then find the rate at which level of oil is changing when oil level is 20cm.

The decomposition reaction of ammonia gas on platinum surface has a rate constant, k = 2.5xx 10^-4 mol L^-1 s^-1 . What is the order of the reaction ?

A rectangular loop of sides 8 cm and 2 cm with a cut is stationary between the pole pieces of an electromagnet. The magnetic field of the magnet is normal to the loop. The current feeding the electromagnet is reduced so that the field decreases from its initial value of 0.3 T at the rate of 0.02 T s^-1 . If the cut is joined and the loop has a resistance of 1.6 Omega , how much power is dissipated by the loop as heat? What is the source of this power?