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a spacecraft moving away from earth emits a 4480 hz signal a scientist on earth measures the signal to be 4476 hz what
the headlights on a certain car are gauged to be 12 m apart the diameter of the pupil in a human eye is 25 mm what is
a meter stick balances horizontally on a knife-edge at the 500 cm mark with two 500 g coins stacked over the 80 cm mark
the position of a 900 kg boulders center of mass has been decided to within an uncertainty of 10 nma what is the
a stone is thrown vertically downward at an initial speed of 14 ms from a height of 65 m above the ground a how far
a swimmer maintains a speed of 15 ms relative to the water when he swims directly toward the opposite shore of the
in exercise physiology studies it is sometimes important to decide the location of a persons center of gravity this can
a car radio draws 013 a of current in the autos 12-velectrical system1 how much electric power does the radio use
two radioactive nuclei a and b are present in equal numbers to begin with three days later there are 299 times as many
a monatomic ideal gas at 165 atm and an initial temperature of250 degc undergoes a slow expansion at constant pressure
two groups of canoeists meet in the middle of a lake after a brief visit a person in canoe 1 pushes on canoe 2 to
an electric generator contains a coil of 120 turns of wire each forming a rectangular loop 600 cm by 367 cm the coil is
use energy conservation to discover the mass of planet ii where it is observed that a meteor is approaching in a
an object undergoing simple harmonic motion has amplitude of 23m if the maximum velocity of the object is 10 ms what is
a force of 16n is applied to the end of a 063 m-long torque wrench at an angle 45 degrees from a line joining the pivot
describe how newtons three laws of motion involved in the process of lifting a weight using the high pulley consider
pretend i went to buy a big diamond or a big cubic zirconia cz for making a ring in a gem show the salesman first
a thin layer of alcohol with n2 12 lies on top of a thin layer of water it h n3 133 which is on top of glass surface
when a ray of light is incident on a material of refractive index 14 nbspthe angle of refraction is 32 degreesnbsp a
a stick of mass 95 kilogram and length 33 meter is pinned at its center but is free to rotate the moment of inertia of
a ball is thrown at a speed of 20 ms at an angle of 30 degree above the horizontala find the initial horizontal and
a 274 kilogram block initially at rest is pulled to the right along a horizontal surface by a constant horizontal force
a particle of unknown mass mnbspdecays into two particles of known masses m1nbsp05 gevc2 and m2nbsp 1gevc2 whose moment
when ultraviolet light of wavelength 25410-5 cm and intensity 05 mwcm2 form a mercury arc falls upon a clean copper
a 50 kilogram block is pushed 80 meter up a rough 36 degree inclined plane by a horizontal force of 79 newton if the