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an empty rubber balloon has a mass of 00109 kg the balloon is filled with helium at a density of 0178 kgm3 at this
a 1500 kg vehicle is making a circular turn on a flat roadway the road has a radius of curvature of 50m and the static
engineers have developed a bathyscaph that can reach ocean depths of 53 mi if the density of seawater is about 1030
nichrome wire of cross-sectional radius 0780 mm is to be used in winding a heating coil if the coil must carry a
a puck on a horizontal frictionless table is attached to a string that passes through a hole in a table initially the
a pencil 157 cm long is released from a vertical position with the eraser end resting on a table the eraser does not
two peaks on chromatogram have k1 31 and k2 49 column efficiency is 2000 theoretical plates void volume is 1ml
a concave mirror has a focal length of 19 cm this mirror forms an image located 76 cm in front of the mirror what is
the outside mirror on the passenger side of a car is convex and has a focal length of -85 m relative to this mirror a
an 870kg block slides with an initial speed of 184 ms down a ramp inclined at an angle of 282 with the horizontal the
a 2000-kg car accelerates uniformly from rest to 120 kmhr in 10 seconds then maintains constant speed this happens on
a solution transmittance is 35 at 260 nm what will the solution absorbance be if you dilute 250
calculate the volume of this flask empty weighed 5612g and full of ammonia weighed 8739g density of liquid ammonia is
a 827 kn car is travelling at 577 mph when the driver decides to exit the freeway by going up a ramp after coasting 369
a 0755 g sample of hydrated copper ii sulfate was heated carefully until it had changed completely to anyhydous
a laser positioned on a ship is used to communicate with a small two man research submarine resting on the bottom of a
at 50 degrees celsius a sample of ammonia gas exerts a pressure of 65 atm what is the pressure when the volume of the
a 250-cm-diameter parallel-plate capacitor with a spacing of 0900 mm is charged to 500 va what is the total energy
a constant force of 25n acts on an object having a mass of 2kg for 3 seconds what is the magnitude of the change in the
500 g sample of aluminium pellets specific heat capacity 089 j oc-1 g-1 and a 1000 g sample of iron pellets specific
give a brief overview of hiv amp streptococcus pyogenes including signs and symptoms who is typically affected by this
in a graph ph vs volume of naohml shows an equivalence point of 700 this graph is 1strong acid weak base 2 weak base