Please anawer this question
Attachments:
Answers
Answered by
3
Hey mate here's your answer
-----------------------------------
a) When we hold a straw and suck the air present in the straw, the air pressure inside decreases and to compensate the deficiet, the water is drawn.
B) The amount of oxygen present in high altitudes as that of the mountain is quite low. So the cells can't respire and can also die. So they have to carry the same.
C) This is because, The air pressure present outside our body or in the atmosphere is same as that of our body.
4. . Fill a cup one-third with water. Cover the entire mouth with an index card. Holding the card in place, take the cup to the sink and turn it upside down. Remove your hand from underneath. Voilà! Because the water inside the cup is lighter than the air outside, the card is held in place by about 15 pounds of force from the air pushing up, while the force of the water pushing down is only about one pound of force.
-----------------------------------
a) When we hold a straw and suck the air present in the straw, the air pressure inside decreases and to compensate the deficiet, the water is drawn.
B) The amount of oxygen present in high altitudes as that of the mountain is quite low. So the cells can't respire and can also die. So they have to carry the same.
C) This is because, The air pressure present outside our body or in the atmosphere is same as that of our body.
4. . Fill a cup one-third with water. Cover the entire mouth with an index card. Holding the card in place, take the cup to the sink and turn it upside down. Remove your hand from underneath. Voilà! Because the water inside the cup is lighter than the air outside, the card is held in place by about 15 pounds of force from the air pushing up, while the force of the water pushing down is only about one pound of force.
RAJAKMANISH:
Exilent answer
Similar questions