3) Why does the following happen:
a) Sharp scissors cut well than blunt ones.
b) The ball thrown up comes back to you.
c) We are able to suck the water through a straw.
d) The lizards are able to climb the wall against the gravity
Answers
Answer:
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Answer:
a) because when the area is less the pressure is more on the paper. blunt surface have less surface area compared to blunt ones.
b) it's because of the gravitational pull of the earth.
c) The sipping action occurs when you lower the air pressure in your mouth, which allows the atmospheric pressure to push the liquid up the straw. ... Suddenly, there is less air pressure inside and liquid is pushed up the straw. The more air you remove from the straw, the higher the liquid will be pushed into it.
d) Lizards have a large number of very tiny hairs on the pads of their feet called setae. ... Lizards employ a rotating motion to attach and detach their feet from the surface, as simply placing their feet on the surface will not generate the required force. Instead, they need to slide their feet into position.