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a water tower is a familiar sight in many towns the reason of such a tower is to provide storage capacity and to
how can i calculate a moment of inertia about its central axis uniform solid cylinder has radius r mass m and length
a radioactive material produces 1200 decays per minute at one time and 6 h later produces 300 decays per minute what is
a heat engine takes heat qh from a hot reservoir and uses part of this energy to perform work w assuming that qh cannot
a 10kg block is attached to a light cord that is wrapped around the pulley of an electric motor what is the power
assume that crude oil from a supertanker has density 750kgm3 the tanker runs aground on a sandbar to refloat the
your accident-reconstruction team has been hired by the local police to analyze the following accident a careless
electric field in the atmosphere a ordinarily there is an electric field in the atmosphere of approximately 100 vm
the identical twins speedo and goslo join a migration from the earth to planet x it is 200 light-years away in a
a rod with sides insulated to prevent heat loss has one end immersed in boiling water t 100degreesc and the other end
a wooden raft has a mass of 55 kg when empty it floats in water 1000kgm3 with 64 of its volume submerged what mass of
a 400 kg piano is being lowered into position by a crane while two people steady it by ropes pulling to the sides bobs
bonnie and clyde are sliding 270 kg bank safe across the floor to their getaway car the safe slides with a constant
a bicycle wheel has a radius of 25 cm what linear distance is traveled with a point on the edge of the wheel if it
concave shaving mirror a concave shaving mirror has a radius of curvature of 350 cm it is positioned so that the
a saw blade has a mass of 05 kg and a radius of 10 cm and is rotating at 300 rpm once turned off it takes 5 seconds to
light in water light traveling in sugar solution 30 of refractive index 138 is incident on a plate of sapphire by index
objects with masses of 285 kg and a585 kg are separated by 0460 ma discover the net gravitational force exerted by
the left face of a biconvex lens has a radius of curvature of 140 cm and the right face has a radius of curvature of
a contact lens is made of plastic by an index of refraction of 160 the lens has an outer radius of curvature of 207 cm
1 through a thunderstorm 47s elapses between observing alighting flash and hearing the resulting thunder about how far
a block of mass m 28 kg is dropped from height h 94 cm onto a spring of spring constant k 1590 nm fig 8-38 discover
an inductor is connected to a 200 hz power supply that produces a520 v rms voltage what inductance is required to keep
a certain laser emits light in a narrow band of wavelengths entered at 5093 nm and by a wavelength width such as on the
the maximum electric field 94 m from a point light source is25 vm what are a the maximum value of the magnetic field