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the amount of carbon-14 in ancient artifacts and fossils is often used to establish their age determine the number of
a hunter standing between two hills fires a shot and hears echoes at a gap of 1s what is the distance between the two
a 400 kg ball on a 500 mstring rotates in a circular path in a vertical plane if aconstant angular speed of 800 rads is
a solid disk has a mass of 162 kg and a radiusof 13 m the disk rotates about an axis through its center likea cd and
a tiny 5 kg object moves on a frictionlesshorizontal table in a circular path of radius 10 m the angular speed is 628
a carousel is free to rotate about its center onfrictionless bearings the carousel has an angular speed of 314rads a
how many moles of chromiumii bromide crbr2 are present in a sample that contains 252 moles of bromide ionshow many
a ball rolls down a hill18 m high and off acurved ramp at the bottom and gets airborne leaving at an angle of35 degrees
a scientist wants to make a solution of tribasic sodium phosphate na3po4 for a laboratory experiment how many grams of
suppose you prepare a 500 ml of 10 m solution aqueous solution of some salt and let it sit out uncovered and some water
boxes are moved on a conveyor belt from where they are filled tothe packing station 110 m away the belt is initially
the armature of a shunt motor has a mass of 250kg and a diameter of 30 cm what horse power is developed by the motor
an unknown compound x is one of the four compounds listed in the table below a mixture of x with benzoic acid melts at
a car at the indianapolis-500 accelerates uniformly from the pitarea going from rest to 285 kmh in asemicircular arc
calculate the ph of 03 m piperazine calculate the concentration of each form of piperazine in the
what information does an absorption spectrum of a compound give you aside from the wavelength with the max
a skier starts from rest at the top of a hill that is inclined at105 degrees with the horizontal the hillside is 200
an al strip is placed in cuso4 solution would you expect a spontaneous reaction to occurbased on the net
a swing is made from a rope that will tolerate a maximum tension of70 102 n without breaking initially theswing hangs
starting from rest you travel a distance of 1600 meters around a giant redwood tree with a circumference of 450 m the
an attempt was made to purify a malate dehydrogenase preparation by precipitating protein with ammonium sulfate at 55
write balanced chemical equations for the reactions involved when salicylic acid is dissolved in aqueous naoh and when
a large rectangular raft density 650kgm3 is floating on alake the surface area of the top of the raft is 82m2 andits
for this lab we had to separate 3 mixed compounds by means of simple distillation after performing simple distillation
a fountain with an opening of radius 0015m shoots a stream ofwater vertically from ground level at 60ms the density of