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determine the density and atomic radius of tungsten w if it crystallizes in a face centered cubic arrangement with cell
a 9 kg mass slides to the right on a surface having a coefficient of friction 037 as shown in the figure the mass has a
a railroad car fo mass m2000kg and speed v0 850ms collides and couples to another car of equal mass and initially at
calculate the ph of a buffer containing 0030 m hc2h3o2 and 0050 m nac2h3o2 the ka of hc2h3o2 is 175 x
in the reaction 2a x y the initial concentrations are all 0600 m if the equilibrium constant is 120 x 106 what are
calculate the activation energy of a reaction whose rate constant is 422 x 104 ssup1 at 25degc and 454 x 104ssup1 at
a wheel rotates with a constant angular acceleration of 310 rads2 assume the angular speed of the wheel is 155 rads at
a certain reaction has a h of -213 kjmol and a s of -270 jmolk at 625degc determine the free energy change in the
determine the molality of a solution that is 725 m nano3aq and has a density of 137
in one of the neutron-induced fission reactions of u-235atomic mass 235043922 the products are ba -140 and kr-93 a
you observe that a solid cube of some material floats on the surface of an oil puddle at a service station with 763 of
a gas occupies 678 ml at 0935 atm and 70 f what will its volume be at 1078 atm and 70
a car approaches the top of a hill that is shaped like a vertical circle with radias r550m what is the fastest speed a
a swimmer who is able to swim a speed of 14ms in still water starts to swim southward directly across a 28km wide river
a rocket-powered hockey puck has a thrust of 150n and a total mass of 140kg it is released from rest on a frictionless
a 180 kg rubber ball is dropped from a height of 350 m and bounces off the floor if the ball does not lose any energy
how much work is done by pressure in forcing 66 m3 of water through a 130 mm internal diameter pipe if the difference
an air conditioner connected to a 150 v rms ac line is equivalent to a 98 resistance and a 197 inductive reactance in
the string in a yo-yo is wound around an axle of radius 0547 cm the yo-yo has both rotational and translational motion
an airtight box having a lid with an area of 139 in2 8968 cm2 is partially evacuated if a force of 1050 lb 46706 n
a river 240 m wide and 50 m deep drains a 30000 km2 land area in which the average precipitation is 48 cmyear
in a rotor-ride at a carnival people rotate in a vertical cylindrically walled room pt a if the room radius was 52 and
a riffle with mass 300kg fires a bullet with mass 350x10-3kg at a speed of 330 ms what is the recoil speed of the
two nichrome wires the following questions refer to the circuit shown in the figure consisting of two flashlight
the area enclosed by the wire loop in the figure below is reduced from 31 cm2 to 13 cm2 in a time interval of 013 s the