Question

II) Give reasons for the following
1. Water does not run out of a dropper unless its rubber bulb is pressed.
2. A door will not move, if we apply force in the direction of the arm length.
3. A lizard is able to walk on walls easily.
pls answer
don't give unnecessary answers ​

Answer 1

1. Atmospheric pressure acting from outside the dropper balances the pressure exerted by water and water does not come out of a dropper. On pressing the dropper inside pressure of water becomes more than outside atmospheric pressure and water runs out.

2. The point is that because the door is attached a hinge, the ONLY force you can exert on the door is a rotative force, which is measured in torque. ... only 5% of your linear force is rotating the door.

3. Lizards have pads on their feet. These pads consist of wide plates or scales and are present below their fingers and toes. ... Thus while walking or running on horizontal or vertical walls, a lizard curls and uncurls its toes thus creating a suction pressure which enables it to cling on to the walls.

Hope this helps.

Answer 2

Answer:

hey come fast I want to talk

yar tune khaha tha kabhi nahi chodengi

phir aaisa kyu

kya hua

are bata to sahi

please jaldi onn aao