Qualification > Sciences
physics
halosh92:
--- Quote from: Phosu on May 07, 2010, 05:11:03 pm ---A mass of a liquid of density ? is thoroughly mixed with an equal mass of another liquid of density
2?. No change of the total volume occurs.
What is the density of the liquid mixture?
A)4/3? B)3/2? C)5/3? D)3?
--- End quote ---
whats the "?" in ure doubt..retype ure question plz
Phosu:
ah the ? is the symbol for density...
A mass of a liquid of density "p" is thoroughly mixed with an equal mass of another liquid of density
2?. No change of the total volume occurs.
What is the density of the liquid mixture?
A)4/3p B)3/2p C)5/3p D)3p
Phosu:
--- Quote from: halosh92 on May 07, 2010, 05:14:13 pm ---see
the voltage at R3 is 2V
at R2 its 1V
at R1 its 2V (because all add up to 5V)
therefore R3 and R1 have same voltage therefore same resistance so its C
--- End quote ---
how did u find these voltages?
halosh92:
--- Quote from: Phosu on May 07, 2010, 05:48:59 pm ---how did u find these voltages?
--- End quote ---
look at the diagram and treat each resistor as if its alone like first resistor its between the 0V and 2V
and second resistor its between 2V and 3V ...basically 3-2=1V
and the 3rd ...we know that total voltage is 5V its between 3V and 5V therefore 5-3=2V
got it?
33oomar:
i got a proplem in IGCSE physics paper 6 May/june 08 Q4 C
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