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a solid disk rotates in the horizontal plane at an angular velocity of 0077 rads with respect to an axis perpendicular
a laboratory technician drops a 00850-kg sample of unknown material at a temperature of 1000c into a calorimeter the
you are given a sample of metal and asked to determine its specific heat you weigh the sample and find that its weight
a steel tank is completely filled with 300 m3 of ethanol when both the tank and the ethanol are at a temperature of
a us penny has a diameter of 19000cm at 200 c the coin is made of a metal alloy mostly zinc for which the coefficient
in a large centrifuge used for training pilots and astronauts a small chamber is fixed at the end of a rigid arm that
find the de broglie wavelength of an oxygen molecule of average kinetic energy in air at a temperature of 1940 k the
an ancient bone contains 555 as much carbon 14 as a piece of living matter with an equal carbon content how old is the
a geiger counter reading of a radioactive sample is initially 7120 counts per minute the same sample gives a reading of
a 10cm long animal tendon was found to stretch38mm by a force of130n the tendon was approximately round with an average
if 490cm of copper wire diameter 100 mm is formed into a circular loop and placed perpendicular to a uniform magnetic
a uniform diving board of length 521 m and mass 504 kg is supported at two points one support is located l1 332 m from
a man is doing push-ups as shown in the figure below he has a mass of 740 kg and his center of gravity is located at a
if the rms value of the electric field in an electromagnetic wave is doubled by what factor does the rms value of the
on a particular afternoon in houston the nitrogen n2 molecules in the air have an rms speed of 515 ms what is the rms
the atmosphere on mars is almost all carbon dioxide co2 and has a pressure of about 69times102 pa much less than that
the power radiated by an object is 145 w if the object were a perfect blackbody radiator and otherwise was the same it
a ball is thrown from the ground with a speed of 30ms at an angle of 55 degree above the horizontal if we neglect air
an italian chef who is very scientific in her approach to cooking measures the specific heat of a porcini mushroom by
an aluminum ring has an inside diameter of 1793 cm and an iron rod has a diameter of 1798 cm both at 1873degc if you
a water pipe having a 24 cm inside diameter carries water into the basement of a house at a speed of 095 ms and a
a soccer ball is kicked with an initial speed of 28 ms at an angle of 22deg with respect to the horizontala find the
a quarterback is asked to throw a football to a receiver that is 329 m away what is the minimum speed that the football
the area of a typical eardrum is about 50x105 m2what is the sound power energy per second incident on the eardrum at
a squirrel is resting in a tall tree when it slips from a branch that is 44 m above the ground it is a very agile