जब झील बन गयी Time Bomb Nyos lake

(a) A spherical tank of 1.2m radius is half filled with oil of relaive density 0.8 . If the tank is given a horizontal acceleration of 10m//s^(2) . Calculate the inclination of the oil surface to horizontal and maximum pressure on the tank. (b) The volume of an air bubble is doubled as it rises from the bottom of a lake to its surface. If the atmospheric pressure is H m of mercury & the density of mercury is n times that of lake water. Find the depth of the lake.

The ratio of time taken by ice on the surface of ponds or lakes to become triple the thickness is

A Bomber flying upward at an angle of 53^(@) with the vertical releases a bomb at an altitude of 800 m. The bomb strikes the ground 20 s after its release. Find : [Given sin 53^(@)=0.8, g=10 m//s^(2) ] (i) The velocity of the bomber at the time of release of the bomb. (ii) The maximum height attained by the bomb. (iii) The horizontal distance tranvelled by the bomb before it strikes the ground (iv) The velocity (magnitude & direction) of the bomb just when it strikes the ground.

A bomber flying upward at an angle of 53^(@) with the vertical releases a bomb at an altitude of 800 m .The bomb strikes the ground 20 s after its release.If g=10ms^(-2) , the velocity at the time of release of the bomb in ms^(-1) is

A bubble of gas released at the bottom of a lake increases to eight times its original volume when it reaches the surface. Assuming that atmospheric pressure is equivalent to the pressure exerted by a column of water 10 m height, the depth of the lake is

A bubble of gas released at the bottom of a lake increases to four times its original volume when it reaches the surface. Assuming that atmospheric pressure is equivalent to the pressure exerted by a column of water 10 m high, what is the depth of the lake?

The volume of an air bubble becomes three times as it rises from the bottom of a lake to its surface. Assuming atmospheric pressure to be 75 cm of Hg and the density of water to be 1//10 of the density of mercury, the depth of the lake is

The volume of an air bubble becomes 8 times the original volume in rising from the bottom of a lake to its surface. If the barometice height is 0.76 m of mercury (density of mercury is 13.6 g cm^(-3) and g = 9.8 ms^(-2)) what is the depth of the lake ?

A piece of cork starts from rest at the bottom of a lake and floats up. Its velocity v is plotted against time t. Which of the following best represents the resulting curve?