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a 10kg block is pushd against a vertical wall by a horizontal forceof 100n as shown in the figure the coeffiecient of
an object with mass 20 kg is attached to aspring with spring stiffness constant k 290 nm and isexecuting simple
a quarterback throws a pass that is a perfect spiral in other words the football does not wobble but spins smoothly
a circuit consists of a 135 resistor in series with a 385 mh inductor and a 500 v ac generator the power dissipated by
a 31cm focal length converging lens is 21cm behind a diverginglens parallel light stikes the diverging lens after
a 70-kg diver steps off a 10-m tower and drops from reststraight down into the water if he comes to rest at 50-m
two wires each 24 m long are taped together to form atwo-wire unit that is 24 m long one wire carries a current of700a
a 21103-kg car starts from rest atthe top of a50-m-long driveway that is sloped at 20 degrees with thehorizontal if an
a 17 cm radius air duct is used to replenish the air of a room92 m x 50 m x 45 m every ten minutes how fast does the
200 grams of iron at 100 degrees c is dropped into aninsulated beaker containing 500 grams of water at 20 degrees
a magnetic dipole with a dipole moment of magnitude0016 jt is released from rest in auniform magnetic field of
a 3000-kg truck runs into the rear of a 1000-kg car that wasstationary the truck and car are locked together after
a ball rolls horizontally off the edge of a tabletop that is50 ft hight it strikes the floor at a point 40 ft
a 85 kg man in a 60 kg chair tilts back so that all the weight isbalanced on two legs of the chair assume that each leg
a parallel-plate capacitor with circular plates of radius0082 m is being discharged a circular loop of radius 018 m
a charge of 2 x 10-6 c is 20 cm from a charge of-3 x 10-6 c find the magnitude and direction of the force on each
a city planner is working on theredesign of a hilly portion of a city an important considerationis how steep the roads
a teaspoon of organic oil dropped on the surface of a stillpond and spreads out to cover the area of almost an acre the
a 50-kg block of aluminum is heated from 20degrees celsius to 90 degrees celsius at atm pressure finda the work done by
the atomic masses of two isotopes of cobalt are 59 and 60a what is the number of protons and neutrons in eachb what is
a farsighted woman breaks her current eyeglasses and is usingan old pair whose refractive power is 1720 diopters since
the energy given off by 300 grams of an alloy as it cools through 50 degrees celcius raises the temperature of 300
a student is reading a lecture written on a blackboard thelenses in her eyes have a refractive power of 6220 diopters
an oceanliner is heading due north with a speed of 85 ms relative to the water a small sailboat is heading 45 degrees
a ball is rolled off a table with an initial horizontalbelocity of 18 ms if the table is 85 cm high and the ball