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imagine a solar electric power plant that operates by using a gigantic mirror to concentrate light on the boiler for a
the primary coil of a step-up transformer is connected across the terminals of a standard wall socket and resistor 1
a 6 kg bowling ball slides down the alley at a speed of 5 ms how much kinetic energy does the ball
women often suffer from back pains during pregnancy let usinvestigate the cause of these back pains assuming that
a pail of water is rotated in a vertical circle of radius 070 m what is the minimum speed of the pail at the top of the
a solid cylinder with a height of 400 m is floating atthe interface between water and oil in an open container that
consider a square current loop l 26 cm that carries a current i 52 a see figure below a constantmagnetic field b 021
a playground merry-go-round made in the shape of a solid disk hasa diameter of 274 m and a mass of3537 kg two children
a 740 n diver drops form a board 9m above the waters surface the acceleration of gravity is 981ms2 find the divers
a force given by f 800ni400nj acts on an objectas it moves though a displacement d 200mj what is the work done by this
the construction of a flat rectangular roof 35 m x 40 mallows it to withstand a maximum net outward forceof 20060 n the
a small vertical mirror hangs on the wall 120 m above the floor sunlight strikes themirror and the reflected beam forms
1 two balls make up a closed system ball a has315 j of energy and ball b has767 j after they collide ball a has605 j
a spring is compressed by 00620m and is used to launch an objecthorizontally with a speed of 150ms if the object
a steel wire is strung between two supports attached to aceiling initially there is no tension in the wirewhen it
a garden hose with a diameter of 063in has water flowingin with a speed of 078ms and a pressure of 12 atmosphere at
a billiard ball with an initial speed of vo10mscollides with two identical balls whose centers are on a
a 40 cm length of wire has a mass of60 g it is stretched between two fixed supports and is under atension of 185 n what
a car comes to a bridge during a storm and finds the bridge washedout the driver must get to the other side so he
a tube with a cap on one end but open at the other end produces astanding wave whose fundamental frequency is 1326 hz
a 32 kg child sits at one end of a34 m long seesaw where should her 65 kgfather sit so the center of mass will be at
a 53-kgwoman contestant on a reality television show is at rest at the south end of a horizontal 149-kgraft that is
an automoble of mass 3000kg is driven into a brick wall in a safetytest the bumper behaves like a hookes-law spring it
an accident victim with a broken leg is being placed intraction the patient wears a special boot with a pulleyattached
give the center of mass for a water molecule the distancebetween a hydrogen atom and the oxygen atom is 91 angstroms