Questions asked by 1s2s2p

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• Why should an ideal voltmeter have infinite resistance, and an ideal ammeter have no resistance?
  
• If 1m is the distance travelled by a photon in #1/cs# and 1s is the time taken for light to travel #c# #m#, then what are the other SI units based on including phsyical constants?
  
• Can someone explain the anticlockwise rule for electrode potentials?
  
• Why is this capacitor useful?
  
• A mass is bouncing on the end of a vertical spring/ Its motion will be simple harmonic if the spring: ?
  
• How do you prove #a=v^2/r# and #a=r\omega^2# using a circle and vector diagram?
  
• How does the variation of the period change in a compound pendulum? How does the period change with different lengths and amount of pendulums? What equations can be used in a compound pendulum?
  
• What is the oxidation state of vanadium in the products? Explain how you got your answer
  
• Why is it easier to oxidise #Fe^(2+)# to #Fe^(3+)# than it is to oxidise #Mn^(2+)# to #Mn^(3+)#?
  
• Why are parametric equations used instead of putting it all into one cartesian equation?
  
• Oxidation of ketones?
  
• Why is the theoretical half life of a proton so high compared to half lifes of other subatomic particles?
  
• How do you derive #eta=(2r^2g(rho_s-rho_l))/(9v)# for a sphere obeying stokes law in a liquid, falling at terming velocity so that #F+U=W#?
  
• How do I find the pH of a diprotic acid?
  
• Why is one a buffer solution and not the other?
  
• In a limit, what is the difference between #lim_(x->a)#, #lim_(x->a^-)#, #lim_(x->a^+)# where #ainRR#?
  
• Write #(9x^2+26x+20)/((1+x)(2+x)^2)# as partial fraction, then expand as binomials up to and including #x^3#. Show the expansion is roughly #5-(7x)/2+Bx^2+Cx^3#?
  
• Why do parts of my answer randomly turn blue?
  
• Are there any functions which are unable to be differentiated?
  
• What makes some questions a 'practice problem' and others a 'conceptual question'?
  
• Can someone explain why a graph of #y=sum_(n=0)^oo-sin(xn)# shows the enclosed area made by #y=tan(x/4)/2# and #y=tan(x/4-pi/2)/2#?
  
• How do I access my messages?
  
• How is the angle used for parallax found?
  
• How do you derive #g=(Gm)/r^2# and #V=-(Gm)/r#?
  
• Are there any equations relating friction to heat transfer or temperature change in an object?
  
• What are the similarities and differences between gravitational and electric fields?
  
• How does density work? Why does density allow a #100kg# block of ice to float on water, but a #1g# steel ball to sink in water? Or a helium ballon to rise in air but a piece of paper to fall?
  
• What are the coordinates of the turning points of #y^3+3xy^2-x^3=3#?
  
• Why does the binding energy per nucleon suddenly decrease between helium and lithium?
  
• In an atom what stops the electrons from being pulled into the nucleus due to electrostatic attraction? Why are electrons able to stay in orbits without being flung off?
  
• Why does the binding energy per nucleon increase during nuclear fission and nuclear fusion?
  
• What is the ionic equation of lead(II) nitrate reacting with potassium chromate(VI) to form #PbCrO_4#?
  
• Which of these pairs of molecules have similar shapes?
  
• For a given function #f(x)=x^a/x^b#, is it correct to say that #f(0)=0,1or"undefined"# depending on the values of #a# and #b#?
  
• During the late stages of a star's life, what causes the star to expand into a red giant/supergiant, then explode into a nebula or supernova?
  
• Can someone help with a and c?
  
• Is there any way to find answers I liked (clicked the heart button on)?
  
• How do I find the #K_c#? (Question in description)
  
• What's the name of the reaction that turns a haloalkane to an alkene?
  
• Can someone explain why this happens?
  
• What is a key question?
  
• What was the first question to be asked on socratic?
  
• If you had an infinite number of circles, each with different radii such that #r_n=1/n, ninZZ^+, nin[1,oo]#. What would the total area and circumference be of all the circles combined in terms of #pi#?
  
• Is it possible to evaluate #sum_(n=1)^oosqrt(4n^2x^2-1)/(4n^2)# in terms of #x#?
  
• Is it possible to convert #r=3cos(3sintheta)# to Cartesian form?
  
• Will it ever be possible to view unanswered questions for a certain topic?
  
• How do you prove that for all values of #n/p,n!=kp,kinRR#, where p is any prime number that isn't 2 or 5, gives a recurring decimal?
  
• Vectors question?
  
• Why does light get polarised when reflected and refracted?
  
• Can someone explain this?