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a 10- kg uniform ladder 50 m long is placed against a smooth wall at a height of 31 m the base of the ladder rests on a
one of the harmonics of a column of air open at one end and closed at the other has a frequency of 448 hz and the next
a 60 kg block slides along a frictionless horizontal ground at a velocity of 7 ms after sliding for 20 m the block
you want to design a helium-filled balloon that will lift a whole payload of 1350 kg find what volume of helium is
a uniform solid disk of mass 297 kg and radius 0200 m rotates about a fixed axis perpendicular to its facea if the
a suitcase full of platinum sits at the bottom of a lake a recovery diver finds that as he lifts the suitcase to the
the depth of the potential well for free electrons in a metal can be accurately determined by observing that the
calculate the smallest number of whole logs density p 725kgm3 radius 00800 m length 300 m that can be used to create
a penny is placed at the outer edge of a disk radius is 0147 m that rotates about an axis perpendicular to the plane of
for this aircraft each wing has an area of 24 m2 when the plane is traveling at normal speed the speed of the wind
a 300 kg boat is initially moving at a constant velocitysuddenly the boat feels a force due to the wind which is
a person exerts a horizontal force of 190 n in the test apparatus shown in the figure find the horizontal force that
a hiker who weighs 916 n is strolling through the woods and crosses a small horizontal bridge the bridge is uniform
under the influence of its drive force a snowmobile is movingat a constant velocity along a horizontal patch of snow
calculate the fluid force in newtons on a square plate with aside of 2 m that is submerged at ahorizontal angle of
a top is a toy that is made to spin on its pointed end by pullingon a string wrapped around the body of the top the
the psychodynamic theory for this essay first provide a detailed description of the structures of personality id ego
a wire has a resistance of 274 omega it is melted down andfrom the same volume of metal a new wire is made that is 3
the heating element of a clothes dryer has a resistance of123omega a voltage of 240 v is connected across the
two small positively charged spheres have a combined charge of5210-5 c if each sphere is repelled from the other by an
the mass of a disk is 05 kg and its radius is 15 cm calculate the moment of inertia for the disk if it is pivoted about
a 0150 t magnetic field b crosses thexy plane perpendicular to the x axis and at anangle of 650deg to the y axis a
two electrical charges q1 225 muc and q2 ndash675muc are located along the x-axisq1 is located at the origin q2 is
a cylindrical cistern constructed below ground level is 3 m in diameter and 2 m deep and is filled to the brim with a