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Physics: Post your doubts here!

omg

omg

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Q.2 International A/AS level phy page 384!
- Describe how a sensor may be used to count the no. of mice that pass through a small hole in the wall.
please any1 ans it!
 
Nemo

Nemo

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Walaikum As Salaam Warahmatullah,
I'd like to know the limitations and Precautions for 'heat' experiments in AS physics P.3. Sorry if its too much :)
Wa antum fajazakumullahu khair.
 
smzimran

smzimran

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AoA
omg said:
Q.2 International A/AS level phy page 384!
- Describe how a sensor may be used to count the no. of mice that pass through a small hole in the wall.
please any1 ans it!
Click to expand...
Probably using light gates
;)
 
Nikesh

Nikesh

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omg said:
Q.2 International A/AS level phy page 384!
- Describe how a sensor may be used to count the no. of mice that pass through a small hole in the wall.
please any1 ans it!
Click to expand...

Using light gates in the hole of a wall.....electronic counter will also be required to increase the number, when any mouse crosses that light gate, counter will increase the display number....
 
Nikesh

Nikesh

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hm12 said:
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s11_qp_23.pdf

please can someone explain question 6 part b
Click to expand...

it there is not given the graph of displacement against time but its given against distance along string
i.e. here u will find wavelength instead of time period (T)
it is said that for a time 0.25T, Since Time period and wavelength are identical in graphical representation u can compare it with wavelength.
From graph u will c that wavelength of wave is 80 cm and new wave starts from 0.25*80 which is 20 cm
so draw a new wave of same nature starting from 20 cm
 
H

hm12

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Nikesh said:
it there is not given the graph of displacement against time but its given against distance along string
i.e. here u will find wavelength instead of time period (T)
it is said that for a time 0.25T, Since Time period and wavelength are identical in graphical representation u can compare it with wavelength.
From graph u will c that wavelength of wave is 80 cm and new wave starts from 0.25*80 which is 20 cm
so draw a new wave of same nature starting from 20 cm
Click to expand...


okay got it thank you:)
 
confused123

confused123

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hi all, i remember in some physics practical past papers we have to take log of some quantities involving some constants...can you guys tell me how to take log or give an example which involves taking log. thankyou.
 
Unicorn

Unicorn

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When doing Physics practicals involving spring extensions in series do you take the extension of one spring or all of them??
 
A

Ahmad (Bebo)

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hay guys i hope you can help me with this one. June 2010 variant 11. q 5, 8, 13, 16. I really hope i get a fast reply. thanks in advance.
 
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