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you have an awkwardly shaped object with an inertia of 15kg that has a tiny hook at one end in order to balance it on
a large mirror is hung from a nail the supporting steel wire has a diameter of 020 mm and an unstretched length of 180
a diver tucks her body in midflight decreasing her moment of inertia by a factor of two by what factor does her angular
a 0015 kg record with a radius of 15 cm rotates with an angular speed of 3313 rpm find the angular momentum of the
a person slowly lowers a 36 kg crab trap over the side of a dock the distance from the shoulder to hand is 070 m what
the size of the nucleus in rutherfords model of the atom is about 100 fm 100e-15 m determine the repulsive
an x-ray tube is operated at 40600 v calculate the minimum wavelength of the radiation emitted by this tubeif this
calculate the energy of the electron in the ground state of triple ionized beryllium which has an atomic number z
a 0575 kg mass falls from a height of 395 m if all of the energy of this mass could be converted to visible light of
a 9000-kg boxcar traveling at 160 ms strikes a second boxcar at rest the two stick together and move off with a speed
in an experimental set-up where a wire with a linear mass density of 1 gm was clamped at one end and passed over a
a laser used in a holography experiment has an average output power of 525 mw the laser beam is actually a series of
a 40 kg ball is located at x 40m y 0m a 60 kg ball is located at x 20m y 40m and a 30 kg ball s located at x -10m y
a heat engine in each cycle extracts 50000 btu of thermal energy and rejects or releases 20000 btu of thermal energya
a straight object of length 36 cm lies along the central axis of a spherical mirror with focal length 92 cm the end
a railroad train is traveling at 300 ms in still air the frequency of the note emitted by the train whistle is262 hz
spacecraft a is being overtaken by spacecraft b that is traveling at 040c relative to spacecraft a when it is 15 x 106
a 1220-kg car traveling initially with a speed of 250 ms in an easterly direction crashes into the rear end of a
when a high-power laser is used in the earths atmosphere the electric field associated with the laser beam can ionize
an electric motor rotating a workshop grinding wheel at a rate of 820 101 revmin is switched off assume the wheel has
a dentists drill starts from rest after 320 s of constant angular acceleration it turns at a rate of 28 104 revmina
a spring of negligible mass stretches 300 cm from its relaxed length when a force of 750 n is applied a 0500-kg
the internal energy of a gas is 553j the gas is compressed adiabatically and its volume decreases by 105cm3 if the
a thin film of oil n124 is laying on a flat piece of glass n183 when viewed through air normal to the oil film