• We need your support!

    We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
    Click here to Donate Now (View Announcement)

Physics, Chemistry and Biology: Post your doubts here!

Messages
56
Reaction score
20
Points
18
We know power = worked done / time taken

So 528W = wd/5s

Then re arrange it so that :

Wd = 528 x 5
Wd = 2640J

work done = force x dist moved so..

2640J = force x 0.30m (30cm apart converted to meters)

2640/30 = force
= 8800N

then 8800 / 800 (his weight)

= 11 so 11 rungs
 
Messages
141
Reaction score
84
Points
38
We know power = worked done / time taken

So 528W = wd/5s

Then re arrange it so that :

Wd = 528 x 5
Wd = 2640J

work done = force x dist moved so..

2640J = force x 0.30m (30cm apart converted to meters)

2640/30 = force
= 8800N

then 8800 / 800 (his weight)

= 11 so 11 rungs

Wow thank you sooo much for helping me i really appreciate it :D
 
Messages
31
Reaction score
310
Points
63
Waleykum Assalam...

I am going to appear for biology in 2014 m/j session..Confused as where to start learning from. I mean from which chapter shall i start studying and would like to have FAQs please.

JazakAllah!
 
Messages
6
Reaction score
0
Points
11
In Chemistry's paper 6, there are questions about ions and their reactions/observances, is there a way I could get the list of which ion reacts how and what color/precipitate they form? That would be a great help.
 
Messages
6
Reaction score
0
Points
11
In Chemistry's paper 6, there are questions about ions and their reactions/observances, is there a way I could get the list of which ion reacts how and what color/precipitate they form? That would be a great help.
 
Messages
56
Reaction score
20
Points
18
Waleykum Assalam...

I am going to appear for biology in 2014 m/j session..Confused as where to start learning from. I mean from which chapter shall i start studying and would like to have FAQs please.

JazakAllah!

Follow this way
 

Attachments

  • SuggestedteachingorderforTripleAwardScience2013.docx
    13.9 KB · Views: 14
Messages
56
Reaction score
20
Points
18
In Chemistry's paper 6, there are questions about ions and their reactions/observances, is there a way I could get the list of which ion reacts how and what color/precipitate they form? That would be a great help.

Help guys! Does anyone have a revision guide for Biology paper 3?????? :( Pleaseee

These notes are v. Good ion tests are on page 17
 

Attachments

  • chemistry-igcse8.docx
    2.7 MB · Views: 16
Messages
4
Reaction score
2
Points
13
AOA need help in physics paper 6
question about these statement ans justification questions how do u answer them?
and how to do question 3 M/J 10 varient 62 part c
thx in advance
 
Messages
31
Reaction score
310
Points
63
Ya thats okay but my question is generally from which chapter do we start studying? And which is the biology text book that i need to follow to achieve my goal in IGCSE? By Authors Mary Jones and Geoff Jones Second edition?? Thanks for ur reference@
 
Messages
23
Reaction score
1
Points
13
AOA need help in physics paper 6
question about these statement ans justification questions how do u answer them?
and how to do question 3 M/J 10 varient 62 part c
thx in advance


Those kind of questions is usually based on the working u have done previously in the same question ( in this case it is part B). If your working is correct you will be able to solve C. & if you noticed the mark scheme for this question, doesn't have a specific answer it just say (expect NO).
B)circuit 1: 1.9/0.31=6.13
circuit 2: 1.8/0.30=6
circuit 3:1.9/0.61=3.11
(Note that the formula is given & the numbers r in the table)
C)The student suggests that P(6.13)+Q(6) should equal P&Q(3.11).
ANS:
Apparently the statement would be: NO
Justification: you can right anything that explains (it shouldn't be scientific).
 
Messages
4
Reaction score
2
Points
13
Those kind of questions is usually based on the working u have done previously in the same question ( in this case it is part B). If your working is correct you will be able to solve C. & if you noticed the mark scheme for this question, doesn't have a specific answer it just say (expect NO).
B)circuit 1: 1.9/0.31=6.13
circuit 2: 1.8/0.30=6
circuit 3:1.9/0.61=3.11
(Note that the formula is given & the numbers r in the table)
C)The student suggests that P(6.13)+Q(6) should equal P&Q(3.11).
ANS:
Apparently the statement would be: NO
Justification: you can right anything that explains (it shouldn't be scientific).


Thx a lot :D
 
Top