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Physics: Post your doubts here!
in waveform p there are four crests and so there are four waves ok? (for the motion from 0 to 18) in waveform q there four crest and and one trough that makes 4.5 waves for waveform p no of waves time period 4 18 x... -
Physics: Post your doubts here!
velocity of all the electromagentic waves is the same i.e 3*10^8 -
Physics: Post your doubts here!
distance between one minima to the other is 0.5 wavelength 0.5 wavelength=15*10^-3 wavelength =0.03m we speed of the light is 3*10^8 frequency= velocity/wavelength 3*10^8/0.03 = we get 1*10^10 1*10^3 is kil0 1*10^6 is mega 1*10^9 is gega so it is 10GHZ -
Mathematics: Post your doubts here!
i did tried to solve this way but it gives only vertex plug in 0 or 0.6 -
Mathematics: Post your doubts here!
done but no help why dont u try to solve it and see if u can get an equation?> -
Mathematics: Post your doubts here!
can anyone tell me how to derive quadratic equation for this curve i know y intercept is 0 so c =0 0.36a+0.6b=0 b=-0.6a (0.3^2)a +0.3(-0.6a)=8 a=-88.9 b=53.33 -88.9x^2+53.33x i get x intercepts vertex and area under the curve right but when i plug in a value of x other than intercept or vertex i... -
Mathematics: Post your doubts here!
is this as level and from which past paper? -
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Chemistry: Post your doubts here!
question no 4 bond breaking is endothermic which has a positive enthalpy change bond forming is exothermic which has negative enthalpy change R and Q is bond forming as u can see p and s is bond breaking the magnitude of bond energy is given u can now find out which reaction is more negative... -
Chemistry: Post your doubts here!
its just one question q1 molar enthalpy change of the reaction of pure sodium carbonate with hydrochloric acid is 49.5KJmol^-1 2.6g of washing soda was added to 50cm^3 of dilute hydrochloric acid in a plastic cup the temperature rose by 5C(specific heat capacity of the resulting solution=4.3)... -
Further Mathematics: Post your doubts here!
which book did u use to study a level f maths -
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Chemistry: Post your doubts here!
i have two questions from chemical energetics as level molar enthalpy change of the reaction of pure sodium carbonate with hydrochloric acid is 49.5KJmol^-1 2.6g of washing soda was added to 50cm^3 of dilute hydrochloric acid in a plastic cup the temperature rose by 5C(specific heat capacity of... -
Physics: Post your doubts here!
this minima is not the point where destructive interference takes place minima is also referred as the lowest point of a wave -
Physics: Post your doubts here!
sorry about the phase stuff i wanted to write there is a path difference which means they are out of phase and thus cant cancel each other completely i.e (destructive interference) and zero minima here means no sound is this possible??? when u are actually moving loud speaker towards microphone -
Physics: Post your doubts here!
minima is formed by complete destructive interference and for that to occur it must be in phase and the amplitudes should such that it cancels each other hope i could help -
Chemistry: Post your doubts here!
step 1 if option a is not correct then either option b c or d is correct else go to step 4 step2 if b is also not correct then either option c or d is correct else go to step 4 step 3 if c is also not then d is correct else go to step 4 step 4 that is correct answer hope... -
Physics: Post your doubts here!
this is from which past paper?? -
Physics: Post your doubts here!
as water is going to expand on evaporating so lets establish a direct relation g cm^3 1/1600 1 1 x we got x as 1600 in the first part right. 1600cm^3 in 1 g now we want mean separation between particles which is to be in cm not cm^3 so cube root this and we get...