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a harmonic sound of wavelength 40cm is resonating in the first overtone of an organ pipe which is closed at one end and
three point charges have equal magnitudes two being positive and one negative these charges are fixed to the corners of
a 5000kg lunar lander is in orbit 30km above the surface of the moon it needs to move out to a 500km-high orbit in
a 2l jar equipped with a tight-fitting lid that contains a rubber septum is half filled with water at equillibrium the
a 76 g 31 cm long road hang vertically on frictionless horizontal axle passing through its center a 10 gram ball of
a water storage tank in a distribution system is filled at a rate of 300 m3h the chlorine concentration of the water
two boats start together and race across a 68 km wide lake and back boat a goes across at 68 kmh and returns at 68 kmh
120 g ball moving to the right at 41msec catches up and collides with a 450 g ball that is moving to the right at 12
a five-slit system with 82 slit spacing is illuminated with 635nm lightpart a find the angular positions of the first
calculate the wavelength of a photon emitted when the electron in a li2 ion relaxes from the n6 energy level to the n4
a hydrogen atom has an ionization energy of 136 ev an electron in the n 4 state makes a transition to the n 2 state
a skier moving at 460ms encounters a long rough horizontal patch of snow having coefficient of kinetic friction 0220
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