In a model of a ship,the mast is 9 cm high,while the mast of the actual ship is 12 m high.If the length if the ship is 28m,how long is the model ship?

In a model, it is shown that an arc of a bridge is semi-elliptical having major axis horizontal. If the length of the base is 9 m and the highest point of the bridge is 3 m from the horizontal , the best approximation of the height of the arch, 2 m from the centre of the base is approximately :

A steel tape 1 m long is correctly cailbrated for temperature of 27.0^(@)C . The length of a steel rod measured by this tape is found to be 63.0 cm on a hot day when the termperature is 45.0^(@)C . What is the actual length of the steel rod on that day? What is the length of the same steel rood on a day when the temper ature is 27.0^(@)C ? alpha of steel is 1.20xx10^(-5)""^(@)C^(-1) ?

From the top of a lighthouse, the angles of depression of two ships on the opposite sides of it are observed to be a and p. If the height of the lighthouse is h m etres and the line joining the ships passes through the foot of the lighthouse, show that the distance betw een the ships is (h(tan alpha + tan beta))/(tan alpha tan beta)

As observed from the top of a 100 m high light house from the sea level the angle of depression of two ships are 30^(@) and 45^(@) . If one of the ship is exactly behind the other on the same side of the light house, find the distance between the two ships. (sqrt(3)=1.73) .

As observed from the top of a 100 m high light house from the sea level the angle of depression of two ships are 30^(@) and 45^(@) . If one of the ship is exactly behind the other on the same side of the light house, find the distance between the two ships (sqrt(3) ~~1.73) .

From the top of a light house, angles of depression of two ships are 45^(@) and 60^(@) . The ships are on opposite sides of the ight house and in line with its foot. If the distance between the ships is 400 m, find the height of the light house.

A ball is thrown vertically upwards with a velocity of 20 ms^(-1) from the top of a multistorey building. The height of the point from where the ball is thrown is 25.0 m from the ground. (a) How high will the ball rise ? and (b) how long will it be before the ball hits the ground ? Take g = 10 ms^(-2) .

As observed from the top of a 75m high lighthouse from the sea-level, the angles of depression of two ships are 30^(@) and 45^(@) . If one ship is exactly behind the other on the same side of the lighthouse, find the distance between the two ships.

As observed from the top of a 75 m high lighthouse from the sea-level, the angles of depression of two ships are 30^(@) and 45^(@) . If one ship is exactly behind the other on the same side of the lighthouse, find the distance between the two ships.