Physics ppr 5 discussion

[cyclone94]

Assalamu alaikum
Since many of us are having probs in phy ppr-5 i hv made dis thread so v can disscuss it out all here.............dis thread mainly aims at posting solved phy past ppr.......mainly qs 1.......
plz lets help each odr out wid....evn if u hv any pointers or notes plz post it out here..
Jazakallah

 

[cyclone94]

sumaiyarox:) Dangerzone00 minie23 goodluckayesha avenger PhyZac Khalil Rizvi Dug kjmumbai djmohammad gary221 mominzahid Silent Hunter agha saad Mariam Abid

 

[cyclone94]

okay so here i hv solved one qs frm m/j 12 /52
if u find any mistake plz lemme noe

 

[cyclone94]

dependent variable- wind speed
independent variable- anlgle
control variable- size of d ballon, amt. of helium present, temp. of the helium gas in d ballon

procedure

1. tie d hot air balloon wid a piece of string wound to a nail wich i s fixed to d ground
2. place a fan ensuring dt d air faces perpendicular on the hot air balloon, th e ballon will hence deviate making an angle with the horizontal. measure d horizontal and vertical distance wid the meter rule
3. place an anaemometer juz bfor d hot air balloon so dt wind speed can b recorded
4. ensure dt d scale placed vertically does nt gv rise to parallox error by using a set square
5. a variable power supply connected 2 d fan can b used 2 change d wind speed
6. attach a constant mass to maintain a constant inclination of the balloon

measurements 2 b taken

1. measure d wind speed calibrated using anamometer calibrated in d units m/s
2. measure d vertical distance using d meter scale and record it as '0'
3. measure d horizontal distance using d meter scale and record it as 'h'

safety precautions

1. the pressure of d balloon must maintained such dt d balloon does nt burst
2. wear safety goggles 2 avoid the air hitting d eye ball

additional detail

1. horizontal surface shud b checked wid a spirit level
2. temp of d balloon shud b constant check using thermometer
3. keep windows door shut
4. wait fr d ballon 2 become stable

 

[$~SauD~$]

dependent variable- wind speed
independent variable- anlgle
control variable- size of d ballon, amt. of helium present, temp. of the helium gas in d ballon

procedure

1. tie d hot air balloon wid a piece of string wound to a nail wich i s fixed to d ground
2. place a fan ensuring dt d air faces perpendicular on the hot air balloon, th e ballon will hence deviate making an angle with the horizontal. measure d horizontal and vertical distance wid the meter rule
3. place an anaemometer juz bfor d hot air balloon so dt wind speed can b recorded
4. ensure dt d scale placed vertically does nt gv rise to parallox error by using a set square
5. a variable power supply connected 2 d fan can b used 2 change d wind speed
6. attach a constant mass to maintain a constant inclination of the balloon

measurements 2 b taken

1. measure d wind speed calibrated using anamometer calibrated in d units m/s
2. measure d vertical distance using d meter scale and record it as '0'
3. measure d horizontal distance using d meter scale and record it as 'h'

safety precautions

1. the pressure of d balloon must maintained such dt d balloon does nt burst
2. wear safety goggles 2 avoid the air hitting d eye ball

additional detail

1. horizontal surface shud b checked wid a spirit level
2. temp of d balloon shud b constant check using thermometer
3. keep windows door shut
4. wait fr d ballon 2 become stable

AWESOMEEE!
btw, can we write in points in the paper?

 

[cyclone94]

AWESOMEEE!
btw, can we write in points in the paper?

yes we can....bt still i'll check it out wid sm1 n tell u

 

[$~SauD~$]

yes we can....bt still i'll check it out wid sm1 n tell u

Yes Please, Cause I write like a mess in a paragraph -.-

 

[scarface007]

well we cant write like that coz thats the pattern of the marking scheme

 

[Jinkglex]

Shouldnt we have also kept the d and h constant?