Questions asked by Saerky

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• What do slope values from the tangents of position-time graphs represent?
  
• Does the slope value obtained from a best-fit line on a velocity-time graph represent acceleration or average acceleration?
  
• Without looking at formulas, how can you distinguish compounds from solutions?
  
• How to separate this mixture physically?
  
• What is the standard form of a quadratic function with a vertex of (-2,-3) and passing through the point (-4,-1)?
  
• On a force versus elongation graph, what is represented by the point where the slope of the best-fit line intercepts the x-axis?
  
• Why are there two tension values in my system?
  
• What is the concentration of the solution produced when 150.0 mL of water is added to 200.0 mL of 0.250 M NaCl?
  
• What is the molarity of the solution produced when #"350.0 mL"# of water and #"75.0 mL"# of #"0.125 M"# #"NaNO"_3# are mixed an boiled down to #"325.0 mL"# ?
  
• Why are tension values different on a pulley with two masses?
  
• Manganese (II) chloride has a solubility of 5.75 M at 0 degrees C. If 125 mL of saturated MnCl2 is evaporated to dryness, what mass of MnCl2 will be left?
  
• A 1.0x10^5 N truck moving at a velocity of 15 m/s north collides head-on with a 1.0x10^4 N car moving at a velocity of 25 m/s south. If they stick together upon impact, what is the velocity of the combined masses?