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what abt d components????
ne idea????????
ne idea????????
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Physics: Post your doubts here!
- Thread starter XPFMember
- Start date
HELP plz:i)the densities of water and steam at 100 degree celcius and 1.01*10^5 pa are 1000kgm^-3 and 0.590kgm^-3 respectively.find the change in volume which occurs when 1 kg of water evaporates at 100 deg celcius and atmospheric pressure of 1.01 *10^5 pa
ii)calculate the work done against the atmosphere to produce the change in volume found in part (i)
ii)calculate the work done against the atmosphere to produce the change in volume found in part (i)
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this is a question in the physics book.. and I am not able to solve it...
Q- an electric kettle is rated 2.4 kW. electrical energy costs 8 cents per kW h. the kettle takes 1.0 minute to boil sufficient water for two mugs of coffee. calculate the cost of making this amount of coffee on three separate occasions..
The answer for this question in the book at the back is given.= 0.96 cents
Please help...
Q- an electric kettle is rated 2.4 kW. electrical energy costs 8 cents per kW h. the kettle takes 1.0 minute to boil sufficient water for two mugs of coffee. calculate the cost of making this amount of coffee on three separate occasions..
The answer for this question in the book at the back is given.= 0.96 cents
Please help...
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post ur doubt on smzimran 's profile. he's an a level student and a tutor as well.he may help u...or better will surely help you...
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A kW h is 3600 x 1000 J= 3,600,000 J. Energy used by kettle to boil water on one occasion is 60s x 2400 W = 144 000 J.
So cost of this is (144 000/ 3 600 000) x 8 cents=0.32 cents. For three occasions it is 0.96 cents.
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Thnks a lot mate..
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Yes.. it is stress over strain
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V/t = (pie P r^4)/ 8C l
pie is unitless
V x 8 C l = Pr^4 x t
C=( Pr^4 x t) / V
=( kgs^-2 x m^2 x s ) / m^3
= kg s^-1 m^-1
P is pressure so its force divided by area
p= F/A
=kg m^2 s^-2/m^2
=kg s^-2
pie is unitless
V x 8 C l = Pr^4 x t
C=( Pr^4 x t) / V
=( kgs^-2 x m^2 x s ) / m^3
= kg s^-1 m^-1
P is pressure so its force divided by area
p= F/A
=kg m^2 s^-2/m^2
=kg s^-2
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Its a question on gravitation. can anyone look at http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s03_qp_4.pdf question 1 part c part i......I dont think the answer posted in the mark scheme is correct, can anyone verify that?
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s03_ms_1 2 3 4 5 6.pdf
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s03_ms_1 2 3 4 5 6.pdf
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Hello, could you help me out on how to draw a diagram for the hall probe? It's a paper 5 question
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Just a rectangular medium placed perpendicular to the mag field...ur r tlking abt nov 11 i fink ????....u won't be assess for the "complex" diagram of a hall probe
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Albert Einstien is right ^
it looks like a pen. connect it with a circuit too!
that's a hall probe: http://www.google.com.pk/imgres?q=h...w=212&start=0&ndsp=14&ved=1t:429,r:2,s:0,i:73
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connected in a circuit -> connected to a power supply!
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Here is the ans.
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Weps....
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Please could you draw the circuit diagram for me as an example..yes it was the nov 11 p5 question
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Buddies please help me with this simple theory question:
The rest mass of a proton = 1.67X 10^-27 kg
However, the mass of a proton is also u ,which is equal to 1.66X 10^ -27
What is the difference ? When do we use which one?
Does the 0.01 difference make any difference during calculations?
Thanks In advance.
The rest mass of a proton = 1.67X 10^-27 kg
However, the mass of a proton is also u ,which is equal to 1.66X 10^ -27
What is the difference ? When do we use which one?
Does the 0.01 difference make any difference during calculations?
Thanks In advance.