Monday
October 20, 2014

Posts by erwin


Total # Posts: 8

science
How do direct and alternating current differ?
February 8, 2012

science
How is temperature related to the average kinetic energy of molecules that make up a substance?
February 7, 2012

science
What do scientists mean when they say that action equals reaction?
February 7, 2012

science
What is the effect of increasing the temperature of a body?
February 7, 2012

physics
A hunter at a distance dx from a coconut tree points the nuzzle of his gun directly at a monkey sitting on the tree at a height dy. The monkey sees the hunters and drops vertically from the tree at the very instant of firing. Will it be hit by the bullet? Explain.
February 7, 2012

physics
Under what condition can a moving object be in a state of equilibrium? If you double the net force on an object and keep the mass constant, how will its acceleration be affected? What will happen to the acceleration if the mass of an object is tripled but the force is kept the...
December 8, 2011

physics
If you were standing in an enclosed car moving at constant velocity, would you have learned in some special way to compensate for the car’s motion? What if the car were moving with constant acceleration? Explain.
December 8, 2011

chemistry
how many moles of Fe2O2 would be formed by the action of Oxygen one kilogram of iron?
January 18, 2011

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