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what about them do you find confusing?i have doubt in ionic equation .
ok, I need help in Physics, May/June 2006 paper 3, question 4 (c). Can anyone help please Thank you in advance
Answer:
E = Power * Time = Pt
E = Mass * Latent heat of vaporization = mL
mL = Pt
L = (Pt)/m
Power is given as 120 W
Per second means 1 second. So, Time = 1s
Mass = 0.05g
Replace values in equation:
L = (120 * 1)/0.05
L = 2400 J/g
Specific latant heat of vapourisation is the amount of energy required to convert 1 kg of a liquid into a vapour.can someone explain specific latent heat of vaporisation to me? and the difference between motors and generators
CHEM:
HOW TO DRAW THE DOT CROSS DIAGRAM FOR AN AMMONIUM ION!?!
Conventional when marking in circuits and stuff...In physics:
Do we look at direction of current as conventional or actual? This just confuses me when i would like to mark an answer according to that.
You look at d conventional current, dat's what my sir saysIn physics:
Do we look at direction of current as conventional or actual? This just confuses me when i would like to mark an answer according to that.
What's dat??remeber dat the fourth bond is dative covalent so u need 2 show it as an arrow...
and put it in brackets with a sigle positive charge shown....
a dative covalent bond is one in which both the shared electrons come from the same atom (in this case, Nitrogen)What's dat??
beta particles are electrons so they have the same mass as an electron...do beta particles hav mass??
The explanation may be as follows:Help in physics : Paper 1 june 2010 http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Physics (0625)/0625_s10_qp_13.pdf
For question 24 i know C is the right answer but not so sure why ?Also in question 34 why is electric fire a wrong answer?
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