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while enjoying a fireworks display you observe a flash of light followed after a brief delay by the corresponding sound
a 100 efficient transformer has 120 primary turns and 840 secondary turns a 15-ohm resistor connected across the
a hydrogen atom initially in the n11 quantum state emits a photon having a wavelength of 287144e-6 m what is the
an object is placed to the left of a lens and a real image is formed to the right of the lens the image is inverted
a coating of n1127 material is to be added to n2149 glass in order to make it iridescent a what is the thinnest layer
a small spherical bead of mass 290 g is released from rest at t 0 from a point under the surface of a viscous liquid
an electron has a velocity of 60 x 106 ms in the positive x direction at a point where the magnetic field has the
calculate the number of photons emitted in one second by a 13 w laser operating at a wavelength of 4000 nm
a 338-kg child runs with a speed of 280 ms tangential to the rim of a stationary merry-go-round the merry-go-round has
1 a scientist proposes construction of a space elevator by using a steel wire to raise a mass from the earths surface
a gas is flowing through a certain system at the inlet the pressure is 03 mpa and the density is 12kgm3 at the outlet
a double-slit experiment has slit spacing 0140mmpart a what should be the slit-to-screen distance l if the bright
calculate the de broglie wavelength of a helium atom moving at a speed of 2440
a satellite has a mass of 5839 kg and is in a circular orbit 410 times 105 m above the surface of a planet the period
a photon has an energy e and wavelength lambda before scattering from a free electron after scattering through a 135
two point charges q 1 -20 mu c and q 2 20 mu c are placed as shown in fig 212b the x-component of the electric
in two-photon ionization spectroscopy the combined energy of two different photons is used to remove an electron from
a satellite moves in a circular earth orbit that has a radius of 838 x 106 m a model airplane is flying on a 228-m
a 30-kg particle has a position vector given by r20t2i30j where r is in meters and t is in seconds what is the angular
two identical rollers are mounted with their axes parallel in a horizontal plane a distance 2d 236 cm apart the two
atoms of an element e are being adsorbed on the surface of a material m materials m has n adsorption sites available
if the uncertainty in velocity of an electron is 8000 ms what is the minimum uncertainty in its
air of room temperature was in a cylinder and sealed cylinder is closed then compression of 800kj work was applied on
a particle oscillates in simple harmonic motion with a period of 204 s and an amplitude of 394 cm at t0it is at z20 cm
provide 2 examples in sport or rehab where instantaneous velocity is more important than average velocity and 2