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zinc has a work function of 430 ev a 480 ev photon strikes the surface and an electron is emitted what is the maximum
x rays diffract from a crystal in which the spacing between atomic planes is 0179nm the second-order diffraction
the resistance of a bagel toaster is 14 to prepare a bagel the toaster is operated for one minute from a 120-v outlet
the heating element of a clothes dryer has a resistance of 11 and is connected across a 240-v electrical outlet what
an air bubble is expelled by an underwater diver at a depth of 172 m as the bubble rises to the surface the pressure
an object is placed in front of a concave mirror with a 241-cm radius of curvature a real image twice the size of the
in a certain time light travels 511 km in a vacuum during the same time light travels only 254 km in a liquid what is
a comet moves about the sun in an elliptical orbit with its closest approach to the sun being about 0680 au and its
a youngs double-slit interference experiment gives bright fringes separated by 305 cm on a screen when the experiment
a 0534-nm photon collides with a stationary electron after the collision the electron moves forward and the photon
when light of wavelength 380 nm falls on a cesium surfaceelectrons are emitted that have a maximum kinetic energy of
a grandfather clock is controlled by a swinging brass pendulum that is 12 m long at a temperature of 21degca what is
an object with a mass of 40 kg moving with a speed of 25 ms is brought to rest after sliding on a rough surface the
a 0030 kg lead bullet hits a steel plate both initially at 20c the bullet melts and splatters on impact assume that 80
determination of the initial velocity of a projectile from range-fall measurementsafter the horizontal projectile
is the center of the mass of the pendulum-ball system at the center of the ball if not where and how is the center of
two 40 cm times 40 cm electrodes spaced 20 mm apart form a parallel-plate capacitor inside the capacitor the electric
force f 30 n -90 n acts on a pebble with position vector r 100 m -16 m relative to the origina what is the
a person is riding a bicycle and its wheels have an angular velocity of 161 rads then the brakes are applied and the
consider an rlc circuit with driving emf amplitude amp917m 10 v resistance r 12 amp937 inductance l 10 h and
a student sits on a swivel seat initially the student is at rest holding a spinning bicycle wheel that has an angular
light with a wavelength of 616 nm passes through a slit 714 mum wide and falls on a screen 180 m away find the linear
two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface
when light of wavelength 370 nm falls on a barium surface electrons having a maximum kinetic energy of 086 ev are
an airplane is sent on a rescue mission to help a stranded explorer near the south pole the plane cannot land but