In a long-jump competition, Sahil jumped 182.88 cm and Munna jumped 179.25 cm of length. Let's find how much more did Sahil jump.

A long jar of diameter 7 cm contains some water. An iron-cylinder of diameter 5.6 cm and of length 5 cm is completely immersed in its water. How much water-level will be raised in the cylinder ?

A bamboo stick is 2m long, 75 cm of it is coloured red and rest part coloured white. (ii) Let's find the ratio between the total length of bamboo and the porition painted white.

A trolley of mass 200 kg moves with a uniform speed of 36 km/h on a frictionless track. A child of mass 20 kg runs on the trolley from one end the other (10 m away) with a speed to 4m/s relative to the trolley in a direction opposite to the trolly's motion and jump out of the trolly. What is the final speed of the trolly? How much has the trolly moved from the time the child begins to run?

A 45 cm long copper wire is bent to from a square. Let's find the length of one side of the square.

There are some water in a long gas jar of 7 cm diameter. If a solid right circular cylindrical pipe of iron having 5 cm length and 5*6 cm diameter be immersed completely in that water, calculate how much the level of water will rise.

Two very long conducting wire are kept at a distance 4 cm from each other in vacuum. Currents flowing through the wires are 25A and 5A, respectively. Find the length of each conductor, which experiences a force of 125 dynes ?

Acceleration due to gravity on the surface of a planet is 196 cm *s^(-2) . If it is safe to jump from a height of 2m on the earth, what is the safe height for taking a jump on that planet ?