Moving air can provide a lift. This can be seen in cases like roof blown off during high speed wind. The phenomenon behind the moving air and lift can be understood with the help of following example.
Activity: When we blow on top of a strip of paper
Observation: The paper is pushed up.
Explanation: To understand this, let us look at the forces acting on the strip of paper.
Firstly, there is gravity which tends to pull it down. So, when you hold the paper near your mouth without blowing air, the paper will hang down due to gravity.
However, when you blow the air above the paper, the pressure on top of a strip of paper is reduced.
Which of the following are correct ? (a) Moving air can provide a lift. this can be seen in cases when roof is blown off during high speed wind. (b) When we blow on top of a strip of paper the paper is pushed up.
| |||
Right Option : C | |||
View Explanation |
What happens when you blow air above the paper? | |||
Right Option : D | |||
View Explanation |
Moving air can produce __________________ | |||
Right Option : B | |||
View Explanation |
It was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
I have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
My experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
It was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
My experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
It has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
My experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
One of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Being a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
About Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.