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a flat uniform circular disk r 200m m100102kg is initally stationary the disk is free to rotate in thehorizontal plane
the vapor pressure of water at 20degrees celcius is 175 mmhg what is the vapor pressure of water over a solution
1 how many total moles of ions are released when each of the following samples dissolves completely in waterb 722 g of
a commuter train passes a passenger platform at a constantspeed of 450 ms the train horn issounded at its
over 10e4 icebergs are calved from greenland each year these icebergs are a serious danger to atlantic shipping
sodium carbonate rm na2co3 is used to neutralize the sulfuric acid spill how many kilograms of sodium carbonate must be
the vertical wall of a small dam is 26 m long and it holdsback a body of water that is 57 m deep hint recall themethod
a thin rod of length 075m and mass 042kg is suspended freelyform one end it is pulled to one side and then allowed to
a 8700 kg car travelling on a level road at 270 ms605 mihr can stop locking its wheels in a distance of 610 m2001 ft
calculate the enthalpy change for the thermite reaction 2als fe2o3s2fesal2o3s deltahrxn -850kj when 120 mol of
a 20 kg mass moves with a speed of 50 ms it collideshead-on with a 30 kg mass at rest if the collisionis perfectly
if 0150 mole of a nonvolatile non electrolyte solute is dissolved in 800 grams of water what are the ideal melting and
a 76 kg astronaut floating inspace in a 111 kg mmu mannedmaneuvering unit experiences an acceleration of 0035 ms2 when
draw the condensation reaction that would form the dipeptide met-ile from the amino acids methionine and isoleucine
a string of mass 2 g and length of 10 m has a tension of 15 npulling it what is the speed of a wave for this
urea nh22co is prepared by reacting ammonia with carbon dioxide the byproduct is water 6372 g of ammonia are reacted
a spherical balloon has a radius of 75 m and is filled withhelium how large a cargo can it lift assuming that the skin
a simple 300 m long pendulumoscillates at a location where g 980 ms2 how many complete oscillations does it make in
a sample of 107 g of co reacts completely with o2 to form co2 how many grams of co2 will be
a man enters a tall tower needing to know its height henotes that a long pendulum extends from the ceiling almost to
a hollow spherical shell radius r carries a surface potential vrr teta phil kcossquared teta sine tetanbsp find the
trans-13-dibromocyclobutane has a measurable dipole moment explain how this fact proves that the cyclobutane ring is
a wire is stretched between two posts another wire is stretchedbetween two posts that are twice as far apart the
the lc50 is used in determining toxicity to aquatic species it is the aqueous concentration of a test chemical that
a doppler blood flow unit emits ultrasound at 50 mhz what is the frequency shift of the ultrasound reflected form blood