A rock is dropped from a sea cliff and the sound of it
A rock is dropped from a sea cliff, and the sound of it strikingthe ocean is heard 3.2 s later. If the speed of sound is340 {\rm m/s}, how high is the cliff?
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calculate the volume of a 0122 m potassium permanganate solution needed to react with a second 150 ml sample of the
a 320 kg steel ball strikes a wall with a speed of100ms at an angle of 600 degrees with the surface it bouncesoff with
a fire helicopter carries a 580 kg bucket of water at the end of a 200 m longcable flying back from a fire at a
the solubility of benzoic water in acid at 0 degrees c is 90gm100ml in a recrystallization of benzoic acid 225gm
a rock is dropped from a sea cliff and the sound of it strikingthe ocean is heard 32 s later if the speed of sound
a rock is tossed straight up with a velocity of 400 mswhen it returns it falls into a hole 115 m deep what is therocks
a 663 kg elevator starts from rest it moves upward 27s with aconstant acceleration until it reaches its cruising speed
-- 243 g of magnesium yield 403 g mgo upon combustion with oxygen how much magnesium needs to be burned to yield 121 g
a skier is gliding along at 472 ms on horizontal frictionless snow he suddenly starts down a 192deg incline his speed
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