Biology; Chemistry; Physics: Post your doubts here!

[TheStallion-Reborn]

What is a RESULTANT force??

 

[Suchal Riaz]

t

What is a RESULTANT force??

the sum of all the forces. for example if u have three forces, put each's head on others tail and draw from first top to last tail. it's direction show the direction of force and it's size represent the magnitude of force.
mostly u have two forces to add, add them by this head or tail method. u will be given the angles to help u find the angle between the two vectors and find recultant using cosine rule if they do not ask u to do it using graphical method.
if u still feel any difficulty ask me which question to solve and i will upload it's diagram.

 

[Khadija_1234]

What are the most important topics got for, physics and chemistry ATP?

 

[TheStallion-Reborn]

D

A: it isnt rare

which 1 is correct?

 

[robinhoodmustafa]

What are the most important topics got for, physics and chemistry ATP?

Qualitative Analysis
Salt preparation, Titration And Moles.
Electrolysis
Organic Chemistry (Usually basic ques.)
Measuring and collecting gases. (Gas syringes and by displacement of water.)
Always 1 graph too

 

[Khadija_1234]

Qualitative Analysis
Salt preparation, Titration And Moles.
Electrolysis
Organic Chemistry (Usually basic ques.)
Measuring and collecting gases. (Gas syringes and by displacement of water.)
Always 1 graph too

Thanks and what about bio and physics?

 

[asma tareen]

25
Which statement is
not
a reason for the importance of recycling aluminium?
A
Aluminium is a rare metal in the Earth’s crust.
B
The demand for aluminium continues to rise annually.
C
The extraction of aluminium from its ore is expensive.
D
The properties of aluminium make it one of the most useful of all metals

think its A

 

[robinhoodmustafa]

Thanks and what about bio and physics?

These r important one not the one that only comes in paper
for Bio

respiration
Homeostasis
eye
Enzyme
Nurtirion in Human and plant
Genetics
Ecology


for phy
Dynamics
electricity
radioactivity
pressure
force

 

[HDIWAN]

a

25
Which statement is
not
a reason for the importance of recycling aluminium?
A
Aluminium is a rare metal in the Earth’s crust.
B
The demand for aluminium continues to rise annually.
C
The extraction of aluminium from its ore is expensive.
D
The properties of aluminium make it one of the most useful of all metals

A

 

[Khadija_1234]

These r important one not the one that only comes in paper
for Bio

respiration
Homeostasis
eye
Enzyme
Nurtirion in Human and plant
Genetics
Ecology


for phy
Dynamics
electricity
radioactivity
pressure
force

Thanks a lot

 

[HDIWAN]

ANY SOURCE OF STUDYING FOR PHY ATP?????????????????????

 

[Saad Mughal]

ANY SOURCE OF STUDYING FOR PHY ATP?????????????????????

P.S. I do not own any of the notes.

 

[TheStallion-Reborn]

The difference between MA and mA is? (milli ampere and mega ampere? )

 

[Kamihus]

The difference between MA and mA is? (milli ampere and mega ampere? )

Capital M denotes Mega and small m mili

 

[Saad Mughal]

The difference between MA and mA is? (milli ampere and mega ampere? )

Yeah, a capital M stands for mega (10^6) and small m stands for milli (10^-3).

 

[usama321]

Yup, the answer is A for that mcq

 

[usama321]

Just came to know HCl contains covalent bonding

 

[Saad Mughal]

Just came to know HCl contains covalent bonding

Hydrogen being the only non-metal that produces positive ions makes it confusing, really.

 

[Suchal Riaz]

Just came to know HCl contains covalent bonding

yup it is covalent until it is in aqueous form. in that proton leaves HCL leaving cl-

 

[usama321]

Hydrogen being the only non-metal that produces positive ions makes it confusing, really.

well, sulpher, nitrogen and a few others also produce, but in compounds like SO4