Physics: Post your doubts here!

[Study4Ever]

9702/21/M/J/11

Question 4b(ii)

PLEASE HELP!

 

[princess Anu]

the beginning of the first qu is not clear in this one.
can you just type the first line

' A ball is released from rest above a horizontal surface. It bounces once and is caught'

 

[princess Anu]

Part bii
Why is the pressure of water assumed to be the same as that of oil even though the h is different

 

[princess Anu]

this too please

 

[princess Anu]

.

 

[princess Anu]

Q whats the difference between crystalline, polymeric and amorphous materials?

 

[A-levels]

Need help with paper 12 , june 2012 question.4.. anyone ?

 

[A-levels]

Physicist

 

[Bba321]

Hi plz help me wih

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s09_qp_4.pdf
Qs 6 part b and c

Thanks

 

[princess Anu]

,

 

[MafaldaC]

http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_w07_qp_2.pdf
Question 1b and 4c help please???

 

[princess Anu]

.

 

[princess Anu]

.

 

[princess Anu]

.

 

[Charlotte20102013]

Suppose that a tank contains 680 m3 of neon at an absolute pressure of 1.01x105 Pa. The temperature is changed from 293.2 to 294.3 K. What is the increase in the internal energy of the neon? [3.9x105 J]

Need help . Thanks in advance!

(This is not a past year question)

 

[Charlotte20102013]

do you have the reference??

2, member: 114812"]do you have the reference??[/

Reference? As in?

 

[Charlotte20102013]

check qu 303 at
http://physics-ref.blogspot.com/2015/01/physics-9702-doubts-help-page-51.html

Thank you!
And the question was provided by my lecturer and no I do not have any idea where he got it from.

 

[Charlotte20102013]

Another question:

An object of mass 0.20 kg tied to a string is made to move in a vertical circle. When the object is at the highest point, the tension in the string is zero. Determine the tension in the string when the object is at the lowest point. [11.8 N]

Thanks!

 

[princess Anu]

why isnt it b? isnt rubber a polymer? and it doesnt follow the hooke's law right? so why a straight line for rubber

 

[Math Buddy]

How to Calculate uncertainties in lg(T/s).