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a grinding wheel in the shape of a solid disk is0240 rm m in diameter and has a massof 250 rm kg the wheel is rotating
a satellite moving in an elliptical orbit is 361 km above earths surface at its farthestpoint and 169 km above at its
a 045 kg mass attached to a spring under goes sinple harmonicmotion with a period of 051swhat is the force constant k
a middle-aged man starts to wear eye glasses with lenses of15 d that allow him to read a book held as close as25 rm cm
in a large centrifuge used for trainingpilots and astronauts a small chamber is fixed at the end of arigid arm that
the drawing shows a device that can be used to measure the speed ofa bullet the device consists of two rotating disks
an rlc circuit is used to tune a radio into an fm station broadcasting at 885 mhz theresistance in the circuit is 120
a diathermy machine used in physiotherapy generates electro magnetic radiation that gives the effect of deep heat
a transformer on a pole near a factory steps the voltage down from3600 v rms to 120 v rms the transformer is to
the wheels axle and handles of a wheelbarrow weigh w 66 n the load chamber and its contents weighwl 560 n the drawing
a 48 kg dog stands on a21 kg flatboat at distance d 61 m from the shore it walks 21 m alongthe boat toward shore and
a balance scale has unequal arms the scale is balanced with am 150-kg block on the left panand a m 229 kg block on
440times1023 nitrogen molecules collide with a 140cm2 wall each second assume that the molecules all travel with a
it is know that a certain hydrogen atom has a definite valueof l what does this statement tell you about the angular
under the influence of its drive force a snowmobile is movingat a constant velocity along a horizontal patch of snow
the distance between slitsin a double-slit experiment is decreased by a factor of 2 if the distance between fringes is
at the local swimming hole a favorite trick is to run horizontally off a cliff that is 83m above the water nbspone
the wheel of a bicycle have an angular velocity of 200 radsnbsp then the brakes are appliednbsp in coming to rest each
a uniform ion beam of radius r consists of n ions per meter of mass m speed v and charge qnbsp find the lorentz force
a circular coil of 8 turns and a diameter of 300 cm is oriented in a vertical plane with its axisperpendicular to the
what current is required in the windings of a long solenoid that has 900 turns uniformly distributed over alength of
a current sensitive circuit in a portable dvd player consists of andc power source and a lightbulb that is used as a
the far point of a nearsighted person is 60 m from her eyes and she wears contact lenses that enable her to see distant
the gravitron single-car roller coaster consists of a singleloop-the-loop the car is initially pushed giving it just
the earths magnetic field is essentially that of a magneticdipole if the field near the north pole is about 1010-4t