Biology; Chemistry; Physics: Post your doubts here!

[danial 234]

When one radium nucleus decays, its mass decreases by 8.8 × 10–30 kg.
How much energy is equivalent to this loss in mass?
(speed of light c = 3.0 × 108
m/s)
A 6.8 × 10–42 J B 2.6 × 10–21 J C 4.0 × 10–13 J D 7.9 × 10–13 J

D

 

[asma tareen]

When one radium nucleus decays, its mass decreases by 8.8 × 10–30 kg.
How much energy is equivalent to this loss in mass?
(speed of light c = 3.0 × 108
m/s)
A 6.8 × 10–42 J B 2.6 × 10–21 J C 4.0 × 10–13 J D 7.9 × 10–13 J

einstein ki theory E=mc2

 

[passion hunter]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Physics (5054)/5054_s03_qp_1.pdf........ can somebody explain me the physics behind this....Q36...

 

[farhan141]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Physics (5054)/5054_s03_qp_1.pdf........ can somebody explain me the physics behind this....Q36...

Was discussed earlier, go back a few pages and you'll find it

 

[farhan141]

Anyone got notes for Nuclear Physics?

 

[KWIKIW]

Who can explain bistable(flipflops) and astable(multivibrator) for CIE GCSE O level syllabus in PHYSICS?

 

[farhan141]

W

Who can explain bistable(flipflops) and astable(multivibrator) for CIE GCSE O level syllabus in PHYSICS?

Whaat... Which chapter is this from? I never heard of it.

 

[iamLbert]

In chapter 19 page 218 and 219 of Cambridge O Level Physixs textbook

 

[sourov97]

In chapter 19 page 218 and 219 of Cambridge O Level Physixs textbook

is it the books name??

 

[iamLbert]

is it the books name??

yes, it is.

 

[KWIKIW]

It is in electronics.

 

[KWIKIW]

iamLBert
Do you have any idea of bistable and astable?

 

[KWIKIW]

In the electronics chapter, it is in the complete physics book and also in the syllabus.

 

[danial 234]

In the electronics chapter, it is in the complete physics book and also in the syllabus.

it is optional

 

[passion hunter]

Anyone got notes for Nuclear Physics?

 

[KWIKIW]

Can anyone send me the M/J 2001 Physics theory paper?

 

[Mohammad Farzanullah]

can any1 plz explain Q21

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Physics (5054)/5054_w12_qp_12.pdf

 

[robinhoodmustafa]

mohdumar

Please Post some of your Special Notes on Physics... If you have any!

 

[pinkywinkypuffy]

can any1 plz explain Q21

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Physics (5054)/5054_w12_qp_12.pdf

sweeti it's A

 

[sourov97]

can any1 plz explain Q21

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Physics (5054)/5054_w12_qp_12.pdf

should be A...cause vibrator to surface distance = center of waves to surface (the waves are reflected!)