Biology; Chemistry; Physics: Post your doubts here!

[Maganius]

Lol, at least I tried

 

[Tuba noor]

Lol, at least I tried

wah kia baat ha apki
thankx btw

 

[Maganius]

The north pole is hung by Thin cotton ok, that's why I just used the square to show that It's hung by thin cotton

 

[Maganius]

wah kia baat ha apki
thankx btw

Yw ^_^

 

[princess Anu]

Which question is this ^

wah kia baat ha apki
thankx btw

 

[princess Anu]

CAN somebody help me with vernier scale !

 

[Tuba noor]

Which question is this ^

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Physics (5054)/5054_w10_qp_42.pdf question 4 part a

 

[Tuba noor]

newton meter lol

 

[Awesome12]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Physics (5054)/5054_w10_qp_42.pdf question 4 part a

Simply take some iron paper clips and place on the plain paper. Put the magnet at a distance of x cm above the iron filings. Count the no. of paper clips attracted. Repeat for the other one.

Or you could use the newton meter wala experiment

 

[Maganius]

CAN somebody help me with vernier scale !

Yep

 

[Maganius]

CAN somebody help me with vernier scale !

1. http://www.instructables.com/id/How-to-read-a-vernier-caliper/

2. http://www.technologystudent.com/equip1/vernier3.htm

 

[Maganius]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Physics (5054)/5054_s13_qp_42.pdf
Q3 anyone?

 

[princess Anu]

Isn't the diagram given in the Mark Scheme?

Apparatus: Clamp stand, thin cotton, iron bar, magnet, newton meter

Explanation:

The Iron Bar is tightened in the clamp stand and the magnet A is suspended vertically from the newton meter using a cotton loop. The magnetic pole at the lower end of the the magnet A is placed in contact with the iron bar and the newton meter is pulled slowly upwards. Note down the reading shown on the newton meter just before it is detached from the iron bar.
Repeat the above steps with the magnet B and compare the readings of the newton meter. The magnet which produces the larger reading on the newton meter is the strongest magnet.

why are we using newton meter :s

 

[princess Anu]

1. http://www.instructables.com/id/How-to-read-a-vernier-caliper/

2. http://www.technologystudent.com/equip1/vernier3.htm

I still didn't get the answer to my question that one division on main scale and vernier scale equals to what? :/

 

[funky brat]

conguctors cannot be charged by friction becuz the electros can move through thm and rearrange thm self...?is this correct....

100%

 

[Maganius]

why are we using newton meter :s

To measure the strength of magnets

 

[Maganius]

I still didn't get the answer to my question that one division on main scale and vernier scale equals to what? :/

I'm not sure about that as well ._.

 

[princess Anu]

To measure the strength of magnets

but how? how are the strengths and weight related?
as in the weight will increase if it attracts iron bar ? is that so?

 

[mohammad ahmed]

p

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Physics (5054)/5054_s13_qp_42.pdf
Q3 anyone?

put some water in displacemnet can just below its spout.place a measuring cylindaer below the spout .carefully place the stopper in the displacement can.some amount of water falls into the cylinder.measure hat amount.that will be its volume

 

[princess Anu]

Why does the reflection of sound changes its amplitude but not wavelength ?