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an ant with mass m is standing peacefully on top of ahorizontal stretched rope the rope has mass per unitlength mu and
1 tube a in a 20degc room is observed to support standingwaves at frequencies of 48 hz 60 hz and 72 hz but not at
three equal 149 microc pointcharges are placed at the corners of an equilateral triangle whosesides are 0500 m what is
an ion has a mass of 374 x 10-26 kg and a charge of6e what is the magnitude of the electric field that will balance the
a camera has a lens or combination of lenses like the converging lens that focuses light from objects into real images
you have a diverging lens of focal length-20cma for what range of object distances will the image be larger than the
in figure a ball is thrown up onto a roof landing some timelater at height h 200 m above and d 300 mhorizontally from
a train is moving parallel and adjacent to a highway with aconstant speed of 23 ms ini- tially a car is 34 m behind
charge is uniformly distributed around a ring of radius r 250 cm and the resulting electric field magnitude e is
a piece of nichrome wire has a radius of 600 10-4 mit is used in a laboratory to make a heater that uses 400 102 w
a toaster uses a nichrome heating wire when the toaster is turnedon at 20deg c the initial current is 150 a a few
the equations below are approximations of the magnitude of theelectric field of an electric dipole at points along the
three point charges q q and -q are placed at the corners of anequilateral triangle and no other charged objects are
an elastic cord vibrates with a frequency of 30 hz when a 60 kg mass hangs from it what would its grequency be if 38 kg
a 650 kg bungee jumper steps off abridge with a light bungee cord tied to her and to the bridge the unstretched length
a roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r a passenger feels the
think about galileos inclined plane experimentsa if a metal marble rolls 15 cm in the first unit of time how farwill it
a positron undergoes a displacement r 80 ihat - 80 jhat 60 khat ending with the position vector r 10 jhat - 60 khat
only 25 of the intensity of a polarized light wave passes through a polarizing filter what is the angle between the
a wire with mass 850 is stretched so that its ends are tied down at points 820 apart the wire vibrates in its
one end of a stretched ideal spring is attached to an airtrack and the other is attached to a glider with a mass of
a tungsten w target is bombarded by electrons accelerated through a potential of 60 kv what is the cutoff wavelength of
water enters a pipe with a cross sectional area of 30 cm2 with a velocity of 30 ms the water encounters a constriction
a long solenoid with 128 turnscm and a radius of 891 cm carries a current of 219 ma a current of 960 a exists in a
at a given instant the current and self-induced emf in an inductor are directed as indicated in the figure the induced