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an interstate highway has been built through a poor neighborhood ina city in the afternoon the sound level in a rented
a 22 kg brick is completely submerged insaltwater and displaces an amount of saltwater weighing 117 n determine the
two cars aampb are 400 meters apart car a travels due east at 30 meters per second on a collision course w car b which
a police car is traveling east at 400 ms along a straight roadovertaking a car ahead of it moving east at 300 ms the
the siren of a police car atrest emits a predominant frequency of 1600 hz and the police car isovertaking you from the
concrete has a specific heat capacity of 670 jouleskg-degreescelsius a 2kg concrete block that has a temperature of 20
a tuning fork produces a steady400 hz tone when this tuning fork is struck and held near avibrating guitar string 20
the vibrations from an 720 hz tuning fork set up standing waves in a string clamped at both ends the wave speed in the
an organ pipe is 107 cm long what is the third audible harmonic if the pipe is closed at one end the speed ofsound in
a wire of mass 0030 kg is stretched between fixed supports a distance 110 m apart if the tension in the wire is 790 n
a starship moving toward earth with a speedof 077 claunches a shuttle craft in the forward directionthe shuttle which
the side of a hollow cubical box is 04 m the box floats in ariver with one fourth of its height beneath the surface
a duck is floating on a lake with 17 of its volume beneath thewater what is the average density of the
a small ball rolls horizontally off the edge of a tabletop that is 115 m high it strikes the floor at a point 186 m
a 0500kg mass oscillates in simple harmonic motion at the endof a spring of constant 150nm the total energy of the
a 2kg cube of aluminum is suspended by a rope tied to aballoon which is floating on a fluid of density 15x103kgm3
a record was set for stair climbing when a man ran upthe 1600 steps of the empire state building in 10 minutes and
assume that theprotons in a hot ball of protons each have a kinetic energy equalto kt where k is the boltzmannconstant
a sinusoidal transverse wave is traveling along astring in the negative direction of an x-axis the figure shows aplot
a 0250-kg toy is undergoing shm on theend of a horizontal spring with force constant k 200 nm when the object is 0012 m
the speed of sound in air at 20degc is 344 msa what is the wavelength of a sound wave witha frequency of 1568 hz
a 44-kg girl is bouncing on a trampoline during a certain interval after leaving the surface of the trampoline her
a satellite is in a circular orbit about the earth m 598 x1024 kg the period of the satellite is 978 x104 s what is
a person in a kayak starts paddling and it accelerates from 0 to 0659 ms in a distance of 0443 m if the combined mass
an unknown particle in an accelerator moving at a speed of 20 x108 ms has a measured relativistic mass of 300kg what