Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 7 Answered

Explain why holes are made in hanging banners and hoardings.
Asked by mail2vinay.m15 | 18 Mar, 2015, 06:11: PM
answered-by-expert Expert Answer

Hi,

Moving air exerts pressure and can displace or damage things and objects that come in their way. So if holes are made in hanging banners and hoardings, air can pass through them and it does not fall down easily. 

Answered by | 18 Mar, 2015, 06:49: PM
Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 7 - Physics
How can we icrease the heat produced in a given wire or a heationg coil.
Asked by Abhinav | 17 Feb, 2017, 06:30: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 7 - Physics
what is difference between mass and weight
Asked by Biresh | 12 Jan, 2017, 05:44: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 7 - Physics
hi sir i can not understand one problem based on motion and time sir plz help me,     The trains covers a distance of 400km between raiganj to kolkata,running non-stop. study the table and determine which train moves faster? what is its average speed.                          ___________________________________________                                          |                 deperture time  |   arives kolkata |                          | train M      |  12:30             | 17:10            |                          |train N       |  15:00            |  22:00            |
Asked by Subinoy | 10 Mar, 2016, 06:26: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 7 - Physics
hi sir   how to draw human heart neatly
Asked by Subinoy | 29 Feb, 2016, 06:08: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 7 - Physics
Please explain rectilinear propagation of light? Which contry devloped the most accurate clock?
Asked by csjhadr | 26 Feb, 2016, 06:16: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 7 - Physics
hi sir,       i have some problem to understand that how to solve the problems based on the formation of images by a plane mirror.so please help me to solve those problems   1.the real view mirror is a plane mirror. a driver is reversing his car at speed of 2m/s. the driver sees in his real mirror, the image of a truck parked behind his car. the speed at ehich the image of the truck appears to approch the driver will be:   a)1m/s  b)2m/s  c)4m/s  d)8m/s
Asked by Subinoy | 27 Jan, 2016, 06:24: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 7 - Physics
how can we know that how muchcharges that the battery conducts?
Asked by Biresh | 27 Jan, 2016, 06:21: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 7 - Physics
my test is one day after how do i study faster ?
Asked by Ananya | 07 Sep, 2015, 04:02: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 7 - Physics
Pls tell my answer.
Asked by mail2vinay.m15 | 18 Mar, 2015, 06:41: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 7 - Physics
Explain why holes are made in hanging banners and hoardings.
Asked by mail2vinay.m15 | 18 Mar, 2015, 06:11: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×