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a compound microscope has objective and eyepiece focal lengths of 65mm and 22cm respectivelypart a if the lenses are
the diffusion constant for the alcohol ethanol in water is 124 10-9 m2s a cylinder has a cross-sectional area of 395
a rock is thrown downward into a well that is 885 m deep if the splash is heard 120 seconds later what was the initial
given two vectorsa 4i 1j and b -1i 4j 3 what is the sum of these two vectors what is the dot product of these two
a weight lifter raises a 1021 n weight a vertical distance of 160 m in a time interval of 220 s compute the power
you sing into a well and find that the well resonates at frequencies of 187 hz and 221 hz with no resonances between
suppose that water waves coming into a dock have a velocity of 13 ms and a wavelength of 22 m with what frequency do
when an archer pulls an arrow back in his bow he is storing potential energy in the stretched bowa compute the
you have a beach ball which has a radius of 25 cm and a mass of 05 kg you have a lead ball which has the same radius
a wave has the following properties amplitude 0222 m period 0593 s wave speed 161 ms the wave is traveling in the -x
a ladder 285 m long weighing 228 n initially lies flat on the ground the ladder is raised to a vertical position
a a 105 kg mass is at the center of a uniform spherical shell of mass 110 x 1020 kg and radius 103 x 106 m find the
in a certain automobile engine with an efficiency of 201 combustion of gasoline in one cylinder releases 520 j of heata
in a pairs figure skating competition a 65 kg man and his 45 kg female partner stand facing each other on skates on the
a gas is contained in a chamber such as that in figure below suppose the region outside the chamber is evacuated and
you are trying to overhear a juicy conversation but from your distance of 240m it sounds like only an average whisper
the half life of carbon 14 is 5730 years if an archeologist finds an patially burned firewood and the carbon 14 content
a water storage tank is an upright cylinder of height 8 m and radius 6 m the storage tank is full of water but is
the threshold of hearing in air corresponds to a frequency of 1000 hz and an intensity of about 74 times 1013 wm2 when
suppose that a 100 cm3 box in the shape of a cube is perfectly evacuated except for a single particle of mass 123 x
you are driving a car which is heading 30 ms towards a brick wall you sound a horn which emits at a frequency of 410 hz
a 10 m long wire carrying a current of 22 a makes an angle of 37 degrees with the earths magnetic field of 051 mt what
heat is added to an open pan of water at 1000c vaporizing the water the expanding steam that results does 561 kj of
a husband buys a helium-filled anniversary balloon for his wife the balloon has a volume of 41l in the warm store at