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a distant galaxy emits light that has a wavelength of 5007 nm on earth the wavelength of this light is measured to be
a 100 mnbsp 3 container of air absorbs 5857 j of heat at a constant pressure of 100 atm air has a density of 120
a 050 kg ball that is tied to the end of a14 m light cord is revolved in a horizontal plane by the cord making a 30deg
a stopwatch is used to measure how long it takes a sprinter to run 100 meters this stopwatch measures time intervals to
at this station is a circuit containing a dc power supply in a box and a coil labeled c do not alter the circuit the
light of wavelength 650 nm is incident generally on a glass plate which rests on a second glass plate so that they
two pole-vaulters just clear the bar at the same height the first lands at a speed of 770 ms and the second lands at a
the light from a red laser pointer has a wavelength of about 600nm if this laser has a power of 027 mw what is the
an ac power generator produces 51 a rms at 3600 v the voltage is stepped-up to 100000 v by an ideal transformer and the
a narrow beam of ultrasonic waves reflects off the liver tumor illustrated in the figure below the speed of the wave is
compute the binding energy of the last neutron in the 4320ca nucleus hint you must compare the mass of the 4320ca with
a spaceship is moving relative to an observer with a speed of 7c shines a beam of light in the forward direction
a cubical box is 75m on a side what are the dimensions of the box with an observer moving with a speed of 88c parallel
a solid square pinewood raft measures 30 m on a side and is 230 m thick what is the total mass of swimmers that the
a 45-m length of wire is stretched horizontally among two vertical posts the wire carries a current of 82 a and
two tugboats pull a disabled super tanker each tug exerts a constant force of 120times106 rm n one at an angle 190circ
a motorcycle with a mass of 200 kg can accelerate from 0 to 30ms in 3 secondsa assuming all of the force generated with
a slit 09 mm wide is illuminated with light of wavelength 599 nm we see a diffraction pattern on a screen 250 m away
a the energy of the 2s state of some element is -5691ev compute the value of zeff for this stateb the energy of the 4s
imagine that you volunteered to spin on the stool for the classroom demo on the conservation of angular momentum
a fan rotating at 20 rpm slows down by a constant acceleration and comes to a stop in a time of 47 s what is its
what is the acceleration of a rising hot-air balloon if the ratio of the air density outside the balloon to that inside
four moles of a monatomic ideal gas expand adiabatically and its temperature decreases from 300 to 285 ka what is the
a wire carrying a current of 800 a is to be formed into a circular loop of one turn if the needed value of the magnetic