Sunday
September 21, 2014

Posts by siobhan


Total # Posts: 8

Physics
Thank you!!
June 16, 2014

Physics
Sled accelerates at 2m/s^2. If net force is tripled and mass is doubled then what is the new acceleration of the sled?
June 16, 2014

Physics! Help
Calculate the net or resultant force in N in x direction given that F1=96.2 N is applied at angle of α=55.4° and a second F2=11.6 N is applied at angle of β=41.2°. See attached figure. Express your answer to 4 significant figures.
May 29, 2014

Physics
ohn and Jack are planning to do a physics lab related to vectors. Starting at the door of their physics classroom, they walk 2.0 meters, south. They make a right hand turn and walk 16.0 meters, west. They turn right again and walk 24.0 meters, north. They then turn left and ...
May 29, 2014

statistics
Given the following information about a sample, calculate a z score for a test grade of 91. = 87, s = 4.01
October 22, 2011

geometry
Find the diagonal length of a square with a side of the square measuring 5 centimetres?
September 7, 2010

science - chemistry (Le Chatelier's)
How does the concentration of the reactants affect the amount of product obtained? In general, does an increased concentration of reactant give more product? What are the exceptions? Does it matter if it's exothermic or endothermic? If the reactants/products are in liquid/...
August 25, 2007

Chemistry
In electrochemistry, why is my experimental voltage value of my cell lower than the standard electrode potential? I used zinc and copper as the electrodes and connected zinc sulphate and copper(II) sulphate using a salt bridge. I got 0.85V instead of 1.10V. I've read that ...
June 22, 2007

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