Nonstick Frying
A 400-mg popcorn kernel is skittering across a nonstick frying pan at 7.9cm/s when it pops and breaks into 2?
A 400-mg popcorn kernel is skittering across a nonstick frying pan at 7.9cm/s when it pops and breaks into two equal-mass pieces.If one piece ends up at rest, how much energy was released in the popping?
I used the k= .5 mv^2 formula
The first time I did .5*0.4g*(0.079m/s)^2 and got J=0.00125 Which was wrong.
Then I took .5(0.2g*(0.079m/s)^2 + 0.2g*0m/s) and got J=6.24*10^-4 Which is also wrong.
I am lost at this point Please help.
u had it right, just using the wrong mass units. use kg instead of g
1/2(m1+m2)*(Vf)^2
m1+m2=400mg = 0.0004kg
always remember to convert to appropriate units for energy calculations. kg for mass and m/s for velocity.
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