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an astronaut is traveling in a space vehicle that has a speed of0455crelative to earth the astronaut measures his pulse
a bird is flying directly toward a stationary bird-watcher and emits a frequency of 1200 hz the bird-watcher however
a light pipe consists of a central strand of material surrounded by an outer coating the interior portion of the pipe
when one person shouts at a football game the sound intensity level at the center of the field is 611 db when all the
a converging lens of focal length f 51 cmis placed 179 cm to the left of a metallic sphere of radius r 100 102 cm an
a woman stands a distance d from a loud motor that emits sound uniformly in all directions the sound intensity at her
you sing into a well and find that the well resonates at frequencies of 176 hz and 208 hz with no resonances between
a certain kind of glass has an index of refraction of 1655 for blue light of wavelength 430 nm and an index of 162 for
in a church choir loft two parallel walls are 588 m apart the singers stand against the north wall the organist faces
the acceleration of a certain simple harmonic oscillator is given by a -158 ms2cos251t what is the amplitude of the
at a height of ten meters above the surface of a freshwater lake a sound pulse is generated the echo from the bottom of
tsunamis are fast-moving waves often generated by underwater earthquakes in the deep ocean their amplitude is barely
photons of wavelength 430 nm are incident on a metal the most energetic electrons ejected from the metal are bent into
unpolarized light incident through a polarizer passes through a second polarizer placed at an angle theta to the first
a 08-kg mass is hanging from a spring with spring constant 12 nm then the mass is displaced from the equilibrium by 2
a standing wave has a wavenumber 226102 radmin what is the distance between the adjacent
a 740 gram grinding wheel 215 cm in diameter is in the shape of a uniform solid disk we can ignore the small hole at
a solid uniform marble and a block of ice each with the same mass start from rest at the same height above the bottom
a bat see the image below can detect very small objects such as an insect whose length is approximately equal to one
a flywheel in a motor is spinning at 530 rpm when a power failure suddenly occurs the flywheel has mass 400kg and
a heavy-duty stapling gun uses a 0164 kg metal rod that rams against the staple to eject it the rod is pushed by a
red light of wavelength 6750 nm produces photoelectrons from a certain photoemissive material green light of wavelength
an electron is accelerated through a potential difference of 300 v before colliding with a metal target what
a solid uniform sphere and a uniform spherical shell both having the same mass and radius roll without slipping down a
cart a with a mass of 2 kg travels on a horizontal air-track at 3 ms and hits cart b which has a mass of 4 kg and is