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gold has a face-centered cubic arrangement with a unit cell edge length of 408 how many moles of gold fit in a sheet
a bat see the image below can detect very small objects such as an insect whose length is approximately equal to one
tension is maintained in a string the observed wave speed is 265 ms when the suspended mass is m 287 kg what is the
the total mass of carbon in living systems is estimated to be 75 x 1017 g the total mass of carbon on earth is
youre burning calories by weight lifting you lift a 65kg barbell 17m and repeat 10 timesa how much energy in do you
a uniform chain of length l and mass m is lying on a smooth table and one-third of its length is hanging vertically
a 20-m long steel wire cross-section 10 cm2 youngs modulus 20 acute 1011 nm2 is subjected to a load of 25 000 n how
estimate the change in the earthrsquos gravitational dipole moment with respect to the earthrsquos center if the polar
the sulfuric acid acts as a catalyst to remove one molecule of water from 2 molecules of ethanol what is the balanced
the surface of the sun is approximately at 5700 k and the temperature of the earthrsquos surface is approximately 280 k
the first-order principal maximum produced by a grating is located at an angle of 116 degrees what is the angle for
suppose 186 kg of water at 144c is mixed with 228 kg of water at 79c after equilibrium is reached the mixture has an
waves on a 10 meter rope travel at 20 ms you shake the rope back and forth until you get a standing wave with a single
what are the h3o and the ph of a propanoate buffer that consists of 047 m ch3ch2coona and 012 m ch3ch2cooh ka of
a nonreflective coating n 131 covers the glass n 152 of a camera lens assuming that the coating prevents reflection
in a series l-r-c circuit the components have the following values l 180 mh c 170 nf and r 380 ohms the generator
draw the structures of the ketones with the molecular formula c6h12o that have a four-carbon
a series circuit consists of an ac source of variable frequency a 150 ohm resistor a 155 uf capacitor and a 456 mh
what is the buffer-component concentration ratio no2- hno2 of a buffer that has a ph of 290 ka of hno2 71 x
during the design of a ski ramp for safety it was decided that a skier should have a speed of no more than 30 ms when
unpolarized light with an intensity of585w m2 is incident on a polarizer with an unknown axis the light then passes
the thermite reaction combines aluminum powder and iron oxide and ignites the mixture to make aluminum oxide and iron
a 200 m long rope is stretched between two supports with a tension that makes the speed of transverse waves 480 ms what
dentists might use a mixture of 40 n2o and 60 o2 as an initial anesthetic of nitrous oxidealthough exact proprtions may
unpolarized light of intensityi0is incident on three polarizing filters the axis of the first is vertical that of the