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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
a submarine is submerged to a depth of 650 ft in the atlantic ocean find the air pressure in psi needed to blow water
a drop of water on a countertop reflects light from a flowerheld 35 cm directly above it the flowers diameter is 25 cm
a 504-g bullet is shot through a099-kg wood block suspended on a string200 m long the center of mass of the block rises
the angular speed of a propeller on a boat increases with constantacceleration from 109 rads to 240 rads in 220
the drive train of a bicycle includes wheels 673 cm indiameter and pedal cranks 175 cm long the cyclist pedals at
a 100-v battery is connected to a 120-ohm resistor ignoring the internal resistance of the battery calculate the power
a disk of mass m and radius r rolls back and forth on avertical track of radius aa write the langrangian for the
after you pick up a spare your bowling ball rolls withoutslipping back toward teh ball rack with a linear speed of v
a wedge of mass m and angle alpha is resting on africtionless horizontal plane a rectangular box of mass m is onthe
give characteristic absorptions values in cm-1 for absorptions by each of the following functional groupsa alcoholsb
a puck of mass 8 kg moving at 8ms strikes an identical puck that is stationary on frictionlessice after the collision