Advertisements
Advertisements
प्रश्न
State whether thrust is a scalar or vector?
Advertisements
उत्तर
Thrust is a vector quantity.
संबंधित प्रश्न
What is the scientific name of the 'upward force' acting on an object immersed in a liquid?
Name the scientist who gave he magnitude of buoyant force acting on a solid object immersed in a liquid.
What is the cause of buoyant force ?
The weight of a body is more than the buoyant force experienced by it, due to a liquid. The body will
For a floating body, how is its weight related to the buoyant force?
The diagram below in Fig. 4.12 shows a device which makes the use of the principle of transmission of pressure.
- Name the parts labelled by the letters X and Y.
- Describe what happens to valves A and B and to the quantity of water in the two cylinders when the lever arm is moved down.
- Give reasons for what happens to valves A and B in part (ii).
- What happens when the release valve is opened?
- What happens to valve B in cylinder P when the lever arm is moved up?
- Give a reason for your answer in part (v).
- State one use of the above device.
A simple U tube contains mercury to the same level in both of its arms. If water is poured to a height of 13.6 cm in one arm, how much will be the rise in mercury level in the other arm?
Given : density of mercury = 13.6 x 103 kg m-3 and density of water = 103 kg m-3.
Define upthrust and state its S.I. unit.
Complete the following sentence :
Two balls, one of iron and the other of aluminium experience the same upthrust when dipped completely in water if _____________ .
Two identical pieces, one of ice (density = 900kg per meter cube) and other wood (density = 300kg per meter cube) float on water.
- Which of the two will have more volume submerged inside water
- Which of two will experience more upthrust due to water.
