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May 18, 2013

# Homework Help: Physics Lab

Posted by Drew on Tuesday, October 21, 2008 at 2:52am.

I have to make a graph showing to the tenth of a second showing velocity, displacement, and acceleration for throwing a tennis ball up three times and letting it hit the ground. My times are 2.85 seconds, 2.56 seconds, and 2.60 seconds.

Any help would be greatly appreciated.

• Physics Lab - bobpurslley, Tuesday, October 21, 2008 at 8:57am

So what is the problem? You have equations to let you compute v, d, and a vs time.

• Physics Lab - rijaalu, Tuesday, October 21, 2008 at 4:05pm

please i need a help in this question.

1.the effective mass of the holes in a particular intrinsic semiconductor is four times that of the electrons. the band gap is 1 eV . calculate the temperature at whcih the fermi level would be shifted by 10% from the middle of the band gap.

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