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in the bohr model of the hydrogen atom the electron moves in a circular orbit of radius 53 x 10-11 m with a speed of 22
oppositely charged parallel plates are separated by 526 mm a potential difference of 600 v exists between the plates a
in case a a metal bullet penetrates a wooden block in case b a rubber bullet with the same initial speed and mass
a the distance to a star is approximately 760 1018 m if this star were to burn out today in how many years would we see
a step-down transformer is used for recharging the batteries of portable devices the turns ratio n2n1 for a particular
an oil slick on water is 120nm thick and illuminated by white light incident perpendicular to its surface what color
an electron is in the n5 state of hydrogen to what states can the electron make transitions and what are the energies
the critical density of the universe is 580times1027 kgm3a assuming that the universe is all hydrogen express the
alpha particles of kinetic energy 500 mev are scattered at 90 degrees by a gold foila what is the impact parameterb
an electron is trapped in an infinite well of width 0120 nm what are the three longest wavelengths permitted for the
an electron has de broglie wavelength 278times1010 mmomentum 23810-24 kgmsdetermine the kinetic energy of the electron
an early method of measuring the speed of light makes use of a rotating slotted wheel a beam of light passes through a
the power crossing a surface perpendicular is equal to the intensity at the surface times the area of the surface since
what is the energy of the photon that when absorbed by a hydrogen atom could cause the followinga an electronic
a photon is emitted when a hydrogen atom undergoes a transition from the n 6 state to the n 1 state calculate values
a beam of unpolarized light of intensity 330 wm2 passes through a polarizing sheet what is the electric field amplitude
an electromagnetic wave has an electric field amplitude of 320 vma what is the maximum magnitude of the poynting vector
an electromagnetic wave in a vacuum has an instantaneous magnetic field strength of 0000000740 t at a certain point
an inductor is to be made by wrapping wires around a paper tube of radius 0702 cm and length 844 cm how many turns will
a wire has a resistance of 600 ohms and is bent into a square loop with sides of length 150 cm the loop is
a wire is moving perpendicularly through a magnetic field of strength 0100 t with speed 600 ms if the potential
which of the following will reduce the time constraint in an rc circuit a-increasing voltage of the battery b-adding an
a gas with a volume of 40 l is at a pressure of 10 atm at a temperature of 300 k it is compressed adiabatically to a
two moles of an ideal diatomic gas have an initial pressure of 400 atm and initial volume of 160 l the molecules in
a radioactive isotope has an activity of 809 mci after 305 hours the activity is 631 mci what is the half-life of the