english
What are the themes in the short story Clothes by Chitra Divakaruni?
sience
what ph is an acid
Chemistry
I have a 40 ml solution of pH 4.36. I need to make this solution at pH 8.5 by adding extra 10 ml of HCl and NaOH. Thanks
Chemistry
I want to make solutions of pH 3.5, 4.5, 6.5, 8.5 and 10.5 from 0.1 M HCl and 0.1 M NaOH. how many ml shall I take from each solution to make these pH levels?
Physics/music
if you stand at one side os a stage with hard parallel side walls 17m apart and make a handclap, how often do the flutter echoes arrive?
Physics/ Music
Suppose you make a tape recording of a male voice singing slowly and playing it back at double speed. What will happen to the pitch of each note? What will happen to the formant frequencies of the vowels? Will it merely sound like a woman singing fast?
DYNAMICS
a particle moves on a circular path of 20 ft radius so that its arc distance from a fixed point of the path is given by s= 4 t^2-10t where a is in feet and t is in seconds. compute the total acceleration at the end of 2 sec.
dynamics
at the bottom of a loop the speed of an airplane is 400 mph. this causes a normal acceleration of 9 g ft/sec^2, determine the radius of the loop
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