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Q. An artillery shell is fired with a minimal velocity of 410m/s at 75o above the horizontal. To clear an avalanche, it explodes on the mountain side 45s after firing.

What is the X-coordinate relative to its firing point?

Q. The best laboratory vacuum has a pressure of about 1 × 10-18 atm, or 1.010 × 10-13 Pa. How many gas molecules are there per cubic centimetre in such a vacuum at 293K?

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  • Category:- Physics
  • Reference No.:- M9350146

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