Question
A piece of wood is held under water. The up thrust on it
will be:Solution
According to the Archimedes' principle, a floating object will experience an upthrust force from water, equal to the weight of water displaced (pushed aside). It will sink into the water until it reaches the point where the weight of the water pushed aside equals its own weight.
- 660 ml of a mixture contains milk and water in the ratio 2:3. If `x` ml of milk and `(x + 80)` ml of water are added, the final ratio becomes 7:9. Find the...
A vessel of capacity 1000 litres is full of milk. x litres are removed and replaced with water, and this is done three times. If in the end there are 51...
- Mixtures A and B have milk and water in ratio 2:1 and 3:2 respectively. 27 ml from A and 30 ml from B are mixed. Find the percentage of water in the final ...
640 litres of mixture ‘A’ contains milk and water in it. If mixture ‘A’ is mixed with 560 litres of mixture ‘B’ which contains water and sal...
A milkman mixed milk and water in an empty container in the ratio 16:11. The quantity of milk mixed was bought by the milkman at the rate of Rs. 34/litr...
150 litres of a mixture (paint + oil) contains 20% oil. How much oil should be added to make the ratio of paint to oil 5:3?
350 ml of mixture contains milk and water in the ratio of 9:5 respectively. If ‘x’ ml of mixture is taken out and 30 ml of milk and 40 ml of water i...
A container holds 1280 litres of a milk and water mixture in the ratio of 9:7. Then, 320 litres of this mixture is removed and replaced with an equal a...
A mixture consists of honey and water in an 8:7 ratio. If 120 ml of this mixture is removed and then 312 ml of water is added to the remaining mixture, ...
A 456 ml mixture consists of milk and water in a 12:7 ratio. If 'x + 22' ml of milk and 'x - 18' ml of water are added, the new ratio of milk to water b...
