Nazinia is fly fishing in a stream. The tip of her fishing rod is 1.8 m above the surface of the water and the fly at the end of the string rests on the water 3.6 m away and 2.4 m from a point directly under the tip of the rod. Assuming that h

Nazima is fly fishing in a stream. The tip of her fishing rod is 1.8 m above the surface of the water and the fly at the end of the string rests on the water 3.6 m away and 2.4 m from a point directly under the tip of the rod. Assuming that her string (from the tip of her rod to the fly) is taut, how much string does she have out? If she pulls in the string at the rate of 5 cm per second, what will be the horizontal distance of the fly from her after 12 seconds?

In a pond of water, a flame is held 2 m above the surface of the water. A fish is at depth of 4 m from the water surface. Refractive index of water is (4)/(3) . The apparent height of the flame from the eyes of fish is -

A fish lies at the bottom of a 4 m deep water lake. A bird flies 6m above the water surface and refractive index of water is 4//3 . Then the distance between

An aeroplane is flying vertically upwards. When it is at a height of 1000 m above the ground and moving at a speed of 367 m//s ., a shot is fired at it with a speed of 567 ms^(-1) from a point directly below it. What should be the acceleration of aeroplane so that it may escape from being hit?

In a lake, a fish rising vertically to the surface of water uniformly at the rate of 3 m/s, observes a bird diving vertically towards the water at the rate of 9 m/s. The actual velocity of the dive of the bird is (given, refractive index of water = 4/3)

One end of a light rod of length 1m is attached with a string of length 1m. Other end of the rod is attached at point O such that rod can move in a vertical circle. Other end of the string is attached with a block of mass 2kg. The minimum velocity that must be given to the block in horizontal direction so that it can complete the vertical is (g=10 m//s^(2))

A ball of mass 1 kg falls from a height of 5m above the free surface of water. The relative density of the solid ball is s=2//3 . The ball travels a distance of 2m under water and becomes stationary. The work done by the resistive forces of water is

A rod of length 6m has a mass of 12 kg . It is hined at one end of the rod at a distance of 3m below the water surface. a.What must be the weight of a block that is attached to the other end of the rod so that 5 m of the rod's length is under water? b. Find the magnitude and direction of the force exerted by the hinge on the rod. The specific gravity of the material of rod is 0.5.

Water is flowing condinuously from a tap of area 10^(-4)m^(2) the water velocity as it leaves the top is 1m//s find out area of the water stream at a distance 0.15 m below the top

Water is flowing continuously from a tap of area 10^(-4)m^(2) the water velocity as it leaves the top is 1m//s find out area of the water stream at a distance 0.15 m below the top