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a skateboarder starting from rest rolls down a 137-m ramp when she arrives at the bottom of the ramp her speed is 628
suppose that when a certain sound intensity level in db doubles the sound intensity in wm2 triples determine this sound
a car is designed to get its energy from a rotating flywheel solid disk with a radius of 100 m and a mass of 400 kg
write the expression for kc for the following reactions in each case indicate whether the reaction is homogenous or
a jetliner is moving at a speed of 189 ms the vertical component of the planes velocity is 376 ms determine the
a certain satellite travels in an approximately circular orbit of radius 91 times 106 m with a period of 8 h 39 min
an air bubble of 10-mm radius is rising in a container with vegetable oil of specific gravity 082 and viscosity 018 pa
a solution of the weak acid formic acid hcooh has a ph of 214 when the concentration of formic acid is 030m what is the
your engineering firm is asked to specify the maximum load for the elevators in a new building each elevator has mass
a hypodermic syringe is attached to a needle that has an internal radius of 0301 mm and a length of 305 cm the needle
can someone please explain to me in simple terms the 4n 2 rule and wherehow the n integer is
in a ballistics test a 21 bullet traveling horizontally at 1400 goes through a 25--thick 370 stationary target and
when the lights of an automobile are switched on an ammeter in series with them reads 1020 a and a voltmeter connected
a calculate the percent dissociation of 035 m benzoic acid c6h5cooh ka 63 multiplied by 10-5b formic acid hcooh the
the inner and outer surfaces of a 5m x 6m brick wall of thickness 30 cm and thermal conductivity 069 wm x degree c are
as a bacterium swims through water it propels itself with its flagella so as to overcome the frictional drag forces and
comets move around the sun in very elliptical orbits at its closet approach in 1986 comet halley was from the sun and
a lead ball weighing 10 n falls 08 m from rest into a bucket of sand the ball stops after making a crater 02 m deep
putrescine nh2ch24nh2 found in rotting animal tissue is now known to be in all cells and essential for normal and
boral is a commercial shielding material consisting of approximately equal parts by weight of boron carbide b4c and
a student is ice fishing in colorado on a frozen lake over spring break he cuts a circular hole in the ice that has a
an optically active d-aldopentose produced on optically inactive alditol upon treatment with nabh4 when this
the statue of isaac newton is crated and moved from the oxford museum of natural history and science for cleaning the
consider a 800-kg man standing on a spring scale in an elevator starting from rest the elevator ascends attaining its
a 020 kg hockey puck slides across a frictionless ice rink at a constant speed of 25 ms ignoring air resistance what is