Physics, Chemistry and Biology: Post your doubts here!

Messages
65
Reaction score
98
Points
28
Assalam-o-Alaikum.
Post your Physics, Chemistry and Biology doubts in here and members, along with me will try their best to help you out. :)

Hi I have a question related to the CIE IGCSE Physics cirriculum.

My question is that if I have a question about that:
  • How is velocity from speed? I know the answer but may anyone tell me do I have to differentiate between both of them in a table? Or how shall I answer them in the examination.
  • Please may someone classify them with examples of each of them.
  • Look at the Diagram Below.
/______/l
l l l I know it looks awful but its only for illustration purpouse.
l l l
l________l_/
Length= 0.5m
Width = 0.5m
Height = 0.2m
Mass = 80kg

Volume= l x w x h so we have 0.5m x 0.5m x 0.2m = 0.2m

If you had 1m3 of liquid in above diagram . What would it's mass be?

PLEASE TELL ME HOW YOU SOLVED THEM



THANKS
 
Messages
2,222
Reaction score
4,914
Points
273
HiI have a question related to the CIE IGCSE Physics cirriculum.

My question is that if I have a question about that:
  • How is velocity from speed? I know the answer but may anyone tell me do I have to differentiate between both of them in a table? Or how shall I answer them in the examination.
  • Please may someone classify them with examples of each of them.
  • Look at the Diagram Below.
/______/l
l l l I know it looks awful but its only for illustration purpouse.
l l l
l________l_/
Length= 0.5m
Width = 0.5m
Height = 0.2m
Mass = 80kg

Volume= l x w x h so we have 0.5m x 0.5m x 0.2m = 0.2m

If you had 1m3 of liquid in above diagram . What would it's mass be?


THANKS
For the first question I think u dont have to make a table If you're given with lines
Fr second one I think 1m^3 =1g :/
 
Messages
10
Reaction score
14
Points
3
1 Air is a mixture of gases. The main constituents are the elements oxygen and nitrogen.
(a) (i) Name another element in air.
.............................................................................................................................. [1]
(ii) Give the formula of a compound in unpolluted air.
.............................................................................................................................. [1]
(b) Common pollutants present in air are the oxides of nitrogen and sulfur dioxide.
(i) How are the oxides of nitrogen formed?
...................................................................................................................................
...................................................................................................................................
.............................................................................................................................. [2]
(ii) How is sulfur dioxide formed?
...................................................................................................................................
...................................................................................................................................
.............................................................................................................................. [2]
(iii) These oxides are largely responsible for acid rain.
State two harmful effects of acid rain.
...................................................................................................................................
.............................................................................................................................. [2]
 
Top