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your task in physics lab is to make a microscope from two lenses one lens has a focal length of 12 rm cm the other a
consider the titration reaction of hydrochloric acid and sodium hydroxide if 4 ml of a 10m solution of sodium hydroxide
a person stands on a bathroom scale in a motionless elevator whenthe elevator begins to move the scale briefly reads
you mass 90 kg are a spyentering a high-security building through a skylight 20 m above thef loor your partner is
a gun isfired vertically into a 110 kg block of wood at rest directlyabove it if the bullet has a mass of 210 g and a
radio waves travel at a speed of 17 x 108 ms through ice a radio-wave pulse sent into the antarctic ice reflects off
concentrated sulfuric acid almost 100 h2so4 has a recognized density of 184 gramscm3 based on this calculate the
a softball of mass 0220 kg that is moving with a speed of45 ms in the positive directioncollides head-on and
a compound containing 3 atms of carbon and 8 atoms of hydrogen in a reaction with oxygen molecules the 2 end poducts of
after 107 s a spinning roulette wheel has slowed down to anangular velocity of 225 rads during this time the wheel has
a uniform meter stick is in static rotational equilibrium when a mass of 220 g is suspended from the 50 cm mark a mass
calculate the enthalpy change change of h for the process in which 371 g of water is converted from liquid at 44
a 60kg woman balances on the heel of her right shoe whosearea is 05cm2 how much pressure does she exerton the floor how
if the vinegar were measured volumetrically eg a pipet what additional piece of data would be needed to complete the
true or falsea the scalar product cannot have unitsb if the scalar product of two nonzero vectors is zero then they are
a 33 rpm phonograph record reaches its rated speed 18 s after it is turned on what was the angular
the inner and outer surfaces of a cell membrane carry a negativeand positive charge respectively because of these
an elevator is moving downward but has a constand upwardacceleration of a35ms2 at a moment when the elevator speed is
a spherical mirror is polished on both sides when used as a convexmirror the magnification is 17 what is the
a block of mass 50kg is pushed 20m along a frictionlesssurface by a constant horizontal force of 60nwhat is the net
a satellite has a mass of 99kg and is located at20x106m above the surface of eartha what is the potential energy
you are standing on the edge of a turntable with frictionless bearings it is initially rotating when you catch a ball
a race driver has made a pit stop to refuel after refuelinghe leaves the pit area with an acceleration whose magnitude
consider a ski lift of length 50 km assume it takes about 60 min for a gondola to travel all the wayup if there are 12
a 8 kg hammer strikes a nail at avelocity of 89 ms and comes to restin a time interval of 80 msa what is the impulse