Question

please answer these 2 questions.

this urgent please.​

Answer 1

Answer:

Buoyancy or upthrust, is an upward force exerted by a fluid that opposes the weight of a partially or fully immersed object.

Explanation:

Air pressure in car tire supports the weight of the car 2 Sucking a drink through a straw - fluid flows because of pressure difference. ... 4 Bullet fired from a gun is driven by gas pressure 5 Toy balloon inflates because of air pressure inside.

Answer 2

Answer:

8. Syringes are used to take blood for blood tests. The pressure of the liquid (blood) forces the liquid to move into the syringe when its plunger is withdrawn. When air is sucked out of a drinking straw, the air pressure inside if decreases and the atmospheric pressure outside forces the liquid to go inside the straw.

9.Buoyancy or upthrust, is an upward force exerted by a fluid that opposes the weight of a partially or fully immersed object. In a column of fluid, pressure increases with depth as a result of the weight of the overlying fluid