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a centrifuge in a medical laboratory rotates at an angularspeed of 3600 revmin when switched off it rotates 50
if a 456-g sample that is 985 k2cr2o7 by mass is allowed to react with 305 ml of hcl with a density of 115 gml and 301
a baseball player hits a baseball m14kg the ball is initiallytraveling horizontally with a speed of 40 ms the batter
if the total number of electrons in a homonuclear diatomic molecule is 13 what is the overall bond order of the
a potential difference v is applied to a wire of cross-section area of 1 unit length 1 unit and conductivitysigma you
a jogger on a circular track that has a radius of 0250 km runs adistance of 100 km what angular distance does the
a wooden board is 20 m long and has a mass of 10 kg thisboard is supported at each end by cement blocks a and b
at what optimum ph would you recommend to separate cytochrome c pi 106 from the mixture of myoglobin pi 70 ribonuclease
a closed hollow sphere of radius r600cm the surface area of asphere of radius r is 4pir2 is made of styrofoam
the reaction of 3-methyl-2-butanol with concentrated hydrobromic acid gives the two isomers bromoalkenesusing curved
an asteroid of mass 100 x 109 kg comes from deep space and fallstoward earth assume the asteroid started the fall from
draw a reaction profile to illustrate the conversion of 2-methyl-2-butanol and hcl to 2-cloro-2-methylbutane and water
assume that the protons in a hot ball of protons each have akinetic energy equal to kt where k is theboltzmann constant
determine the velocity as a function if time for a raindrop of mass m 4x10-6 kg that reaches a terminal velocity ofvt
an object is 794 cm from the surface of a reflective spherical christmas-tree ornament 78 cm in diameterwhat is the
a diver shines a flashlight upward from beneath the water ata 380circ angle to the vertical at what angle does the
an engine moves a boat throughthe water at a constant speed of 15 ms theengine must exert a force of 60 kn to balance
a constant horizontal force f of magnitude 20 n is applied to awheel of mass 20 kg and radius 05 m the wheel rolls
a 12 g bullet moving horizontally strikes and remains in a 30 kg block initially at rest on the edge of table the
a motor has a constant angular acceleration of 5revsec2 if the motor goes from low speed of 1200rpm tohigh speed in 5
a 20 kg object moving with a velocity of 50 ms in the positive x direction strikes and sticks to a 30 kg object moving
a block of mass 3kg is pulled along a flat surface with acord which makes an angle of 250 above the horizontalthe
if astronauts could travel at v 0970c we on earth would say it takes 420 0970 433years to reach alpha centauri 420
suppose the space shuttle is in orbit 320km from the earths surface and circles the earth about once every909 minutes
the length of a spaceship is measured to be exactly 13 its restlength a what is the speed parameter beta ofthe