Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
secondary 2 | Science
One Answer Below
Anyone can contribute an answer, even non-tutors.
What is the answer
Date Posted: 6 years ago
Views: 1209
See 1 Answer
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
As you suck the air from the straw, pressure inside the straw is reduced. Atmospheric pressure acting in the surface of the liquid can now overcome the pressure inside the straw.
Before you suck from the straw there is no difference in pressure between inside the straw and on the surface of the liquid since atmospheric pressure acts on both surfaces.
The atmospheric pressure sort of pushes the liquid up as you reduce the pressure by sucking the air in the straw.
.
Before you suck from the straw there is no difference in pressure between inside the straw and on the surface of the liquid since atmospheric pressure acts on both surfaces.
The atmospheric pressure sort of pushes the liquid up as you reduce the pressure by sucking the air in the straw.
.
Date Posted:
6 years ago
The answer is atmospheric pressure
360 Tutoring Program