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Physics P5 All Info You Need !!
i suggested this; absolute uncertainty= fractional uncertainty multiplied by the answer of division or multiplication. hence; absol uncer = (log 1.98 - log 1.96) * (log 1.96) in log fractional uncertainty = log of largest possible value - log of mid value ---> (log 1.98... -
Physics P5 All Info You Need !!
null method is when the galvanometer is not calibrated(numbered) but is used to located slight electric current.it's a sensitive ammeter . -
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Physics P5 All Info You Need !!
for question 1 ( log(19.8)-log(19.6) )*(log(19.6))= 5.69*10^-3 -------> 0.005 or 0.006 :) question2: (omega)w= angular speed/time taken for one complete rotation measure time taken(T) and hence; w= 2(pie)/T -
Physics P5 All Info You Need !!
no point in mic being outside..the question is the effect of pressure on sound. -
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Physics P5 All Info You Need !!
take log(1.2) this is the value, then take ( log(1.3)-log(1.2) ) for uncertainty . -
Physics P5 All Info You Need !!
no this is not possible as errors are caused by the instrument hence when there is an error inthe given reading..then by further calculation the error CANNOT DISAPPEAR! -
Physics P5 All Info You Need !!
use hc/e=gradient ...calculate value of h using gradient of best fit then using gradient of worst fit...find the difference for the two values of h...this is the absolute uncertainity. now percentage uncertainity=absolute uncertaity/best value of h(value of h using gradient of best fit) *100%... -
Physics P5 All Info You Need !!
when two values are divided their fractional uncertainities are added...similarly 1/h ... 0 is the uncertainity in 1 ...ie 1+-0 -
Physics P5 All Info You Need !!
yes these are the same ones :) for y = e^kn lny = kn*ln(e) we know ln(e)=1 lny = K * n Y =M* x passing through origin straight line. :) -
Physics P5 All Info You Need !!
(0.5/54.5)*(1/0.545)= 0.01683 ----> 0.02 or 0.01 both acceptable :) -
Physics P5 All Info You Need !!
(0+5/400)*(1/400*10^-3) = 0.03125 ----> 0.03 :) -
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Physics P5 All Info You Need !!
for both the other methods try taking log.. :) -
Physics P5 All Info You Need !!
Callorimeter gives the temperature change for a reaction. Hydrometer when dipped in liquid gives it's density. equation given in Q2 can be expressed in the form Y=mX+c Y (Y co-ordinate) m (gradient) X (X co-ordinate) Y (Y intercept) Deriving to Y=mX+C form involves...