Recent content by guppster

Thanks for the reply Simon Bridge! Yeah, I had already understood the mirror question, but your last paragraph has really helped me :)

Thank you cepheid and Simon Bridge!

Homework Statement 1. I have been recently wondering how is data stored on and retrieved from optical devices like CDs, DVDs, and Bluray. What makes these different storage types different from each other? 2. Why will a silver mirror not show a reflection when you sand the surface with...

I have been recently wondering how is data stored on and retrieved from optical devices like CDs, DVDs, and Bluray. What makes these different storage types different from each other? Why will a silver mirror not show a reflection when you sand the surface with very coarse sandpaper? Is it...

*SOLVED* //Close-Thread

Homework Statement Two vehicles crash at an intersection Mass of vehicle one: 1858kg Mass of vehicle two: 2865Kg Vehicle one was headed North Vehicle two was headed East The two vehicles stuck together in a t-bone fashion and the two vehicles left the intersection stuck together, moving at...

v1 = d1/t1 v2 = d2/t2 like this? (1/2)(d1/t1 + d2/t2)

Um, No they are not the same.

Thank you for welcoming me to PF. I am truly very grateful you replied. Is there a valid reason for this inequality, i think it is because the velocity values are not very precise.

Homework Statement A Bus drives 1km up a hill in 5.0 minutes. It then drives down the hill in 4.0 minutes. For the bus, find a) the average speed up the hill b) the average speed down the hill c)the average speed for the whole trip d)why is the answer for c) not equal to (speed up the hill +...