PHYSICS HELP!!

[farrukh]

Hello everyone, I am new to this forum and found it very useful. I have my physics paper day after tomorrow so I would be glad if someone can these problems

1. Describe simple experiments to show refraction of sound waves.
2. Describe the factors which influence the quality (timbre) of sound waves and how these factors may be demonstrated.
3. Use of ultra sound in quality control.
4. Discuss the environmental and cost implications of underground power transmission compared to overhead lines.
5. State the meaning of the terms processor, output device and feedback.
6. Describe the use of a bistable circuit.
7. Describe the use of a astable circuit. Describe how the frequency of an astable circuit is related to the values of the resistive and capacitive components.
8. Describe with the aid of a block diagram one type of fission reactor for the use in a power station.

All these topics are listed in the syllabus.
Waiting for someone to reply.
Thankyou

 

[farrukh]

waiting for somone to reply

 

[mzzzz]

it is highly unlikely tht these topiks will b examined
anyway, i did cover some of these topics
but i dont quite remember now
u can use stephen poplez book fr bistable and astable circuits n other topiks
if not u cn google them

 

[farrukh]

i tried to google but didnt help :s
can anyone here help?

 

[Zishi]

Hello everyone, I am new to this forum and found it very useful. I have my physics paper day after tomorrow so I would be glad if someone can these problems

1. Describe simple experiments to show refraction of sound waves.
2. Describe the factors which influence the quality (timbre) of sound waves and how these factors may be demonstrated.
3. Use of ultra sound in quality control.
4. Discuss the environmental and cost implications of underground power transmission compared to overhead lines.
5. State the meaning of the terms processor, output device and feedback.
6. Describe the use of a bistable circuit.
7. Describe the use of a astable circuit. Describe how the frequency of an astable circuit is related to the values of the resistive and capacitive components.
8. Describe with the aid of a block diagram one type of fission reactor for the use in a power station.

All these topics are listed in the syllabus.
Waiting for someone to reply.
Thankyou

As about the bistable and astable circuits, and other things from Electronic Systems, the syllabus itself says, 'There will be no compulsory questions set on Section 25 of the syllabus, i.e. Electronics
systems – printed in italics. Questions set on topics within Section 25 will appear only in
Paper 2 and will always be set as an alternative within a question'
So, I've never touched these topics in my 3 years of O levels. Just relax!

 

[farrukh]

what about other topics other than electronics?? refraction of sound waves and ultrasound is not optional

 

[Zishi]

what about other topics other than electronics?? refraction of sound waves and ultrasound is not optional

Yeah, they ain't optional. You can just read them from the book of Federal.

 

[sahar]

wht r u guyx doing ...reading da whole book or solving pastpaers yearly ???.....derex so much to do n so damn confused wht n how to do...

 

[Zishi]

wht r u guyx doing ...reading da whole book or solving pastpaers yearly ???.....derex so much to do n so damn confused wht n how to do...

First read the book and if there's still some time remaining, then you should solve past papers, too!

 

[farrukh]

what about other topics other than electronics?? refraction of sound waves and ultrasound is not optional

Yeah, they ain't optional. You can just read them from the book of Federal.

which book are you talking about can you name the book and its author please

 

[farrukh]

wht r u guyx doing ...reading da whole book or solving pastpaers yearly ???.....derex so much to do n so damn confused wht n how to do...

i am doing both

 

[sahar]

da whole ov it ??? or juxt luking at da notes ??? ....is yearly solving important ?.....

 

[Dashey]

hey man farukh i've tried to solve some of ur questions here do check em out!
viewtopic.php?f=25&t=1220&start=10

 

[farrukh]

da whole ov it ??? or juxt luking at da notes ??? ....is yearly solving important ?.....

i think solving yearly is more important than topical but there is no time left so looking at your notes would now be better

 

[farrukh]

hey man farukh i've tried to solve some of ur questions here do check em out!
viewtopic.php?f=25&t=1220&start=10

thanks Dashey it really helped

 

[ShudyShab]

Hi please help me out with this CIE paper May/June 2010 Paper 23

Q2c)

and

Q3c) i)

Please Thank You