• 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
327
Reaction score
166
Points
53
What o.o?
Both formulas are wrong, you might want to double-check your textbook...
Im confident that latent heat= energy DIVIDED by mass
and specific heat capacity as well, it is
Heat capacity=e/mass*change in temperature
He said:
specific heat capacity =E=mc*(temp change)
latent heat of fusion/vapourization = E=M*L
I think he meant:Specific heat capacity formula is : E=mc*temp change
and that latent heat of fusion formula is: E=M*L
Just bad use of equal signs is all
 
Messages
1,329
Reaction score
600
Points
123
CAN U PLZ SHOW A ROUGH DRAWING ....... THNX IN ADVANCE !!!

WHICH ONE IS CORRECT
View attachment 10721 View attachment 10722

Basically this is what it should look like, only reflect ONCE! (Once again my paint skills prevail)
Untitled-8.png
 
Messages
53
Reaction score
5
Points
18
what are the scalars and vectors with all examples ?

what are the renewable sources of energy and non-renewable?

important formulas for the motion stuff like acceleration etc
 
Messages
1,329
Reaction score
600
Points
123
what are the scalars and vectors with all examples ?

what are the renewable sources of energy and non-renewable?

important formulas for the motion stuff like acceleration etc

Scalar quantities are quantities WITHOUT a DIRECTION, such as speed.
Vector quantities are quantities WITH a DIRECTION, such as velocity.

Renewable sources of energy are anything besides fossil fuels such as tidal, wind, hydro-electric, etc.
Non-renewable sources of energy are those that are limited, such as fossil fuels (Coal,oil,petrol)

Important formulas? ALL FORMULAS ARE IMPORTANT! Learn as many as you can , I'd get started straight away.
 

Moi

Messages
223
Reaction score
80
Points
38
what are the scalars and vectors with all examples ?

what are the renewable sources of energy and non-renewable?

important formulas for the motion stuff like acceleration etc

Scalers--> Quantity with magnitude (No Direction)
ex: speed / distance
Vectors---> Quantity with magnitude AND direction
ex: force / velocity / weight

Renwable sources:
1)Hydroelectric
2)Solar
3)Geothermal
4)Wind energy
5)Tidal/Wave energy

Non-Rewable:
1) Nuclear Fission
2)Chemical energy (petrol/gas)


Formulas:
1)Main --> D=S*T Distance=Speed * Time
2)Acceleration ---> A=V-U/T Final velocity -Initial Velocity divided by time

Hope i helped :)
 
Messages
36
Reaction score
10
Points
18
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Physics (0625)/0625_s10_qp_32.pdf
Number 9ii) --->I don't get why it's not 8 if in the first part, it is 2. I mean, the charge always travels through the 'easiest' path, right? As in less resistors, etc.
Number 10 a) and b)
Number 11 b)
because it become a parallel circuit so (1/24)+(1/8)=4/24=1/6 so total resistance=6
11b) use the left hand rule with the direction of current in the opposite of the direction of radiation
 
Messages
53
Reaction score
5
Points
18
Scalers--> Quantity with magnitude (No Direction)
ex: speed / distance
Vectors---> Quantity with magnitude AND direction
ex: force / velocity / weight

Renwable sources:
1)Hydroelectric
2)Solar
3)Geothermal
4)Wind energy
5)Tidal/Wave energy

Non-Rewable:
1) Nuclear Fission
2)Chemical energy (petrol/gas)


Formulas:
1)Main --> D=S*T Distance=Speed * Time
2)Acceleration ---> A=V-U/T Final velocity -Initial Velocity divided by time

Hope i helped :)

girl u are a life saver thank you so so much :)
 
Messages
36
Reaction score
10
Points
18
please help
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Physics (0625)/0625_s10_qp_32.pdf
question 10 b! i have studied y plates can deflect the beam in vertical and x plates in horizontal but in marking scheme its oppositre they wanna reduce the peak to peak distance and its horizontal so they should make change in time base ryt?
please help
peak to peak distance means the distance from top to bottom (each peak is the amplitude), so if they want to reduce the peak to peak distance the want to reduce the height of the waveform, so the y-gain should be increased
 
Messages
178
Reaction score
362
Points
73
(b) workdone = energy
workdone=force x perpendicular distance
power = work done / time
power = ( f x d ) / t
528 = (800 x d)/ 5
2640 = 800 x d
d = 3.3 m
(3.3 x 100)/30
= 11 rungs
__________________________________
(c) efficiency=(energy output / energy input) x 100
15=(800 x ( 0.3 x 20 ) x 100)/ei
=32000 J
__________________________________
hope that helps & best of luck :)
 
Top