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a deuterium nucleus mass 200 moving at 650 ms collides with a helium nucleus mass 400 moving at 480 ms in the opposite
seawater contains caco3 012 gl caso4 175 gl nacl 297 gl mgso4 248 gl mgcl2 332 gl nabr 055 gl and kcl 053 gl what is
during gym class a 50-kg teenager runs at 80 ms along the floor toward a rope hanging 78 m from the ceiling he grabs
aldrin an insecticide has a logkow of 58 while atrazine an herbicide has a logkow of 26 kow is the octanol-water
a 79 kg ball that is originally 393 m above a spring is released from rest how far will the spring compress when the
the 235u isotope amu 235 undergo fussion when bombarded with neutrons natural abundance is 072 to seperate it from the
a student has been asked to titrate an hcl solution with a concentration of 035 m against an unknown concentration of
when gasses f2 and solid i2 are heated to high temperature the i2 sublimes and gasses iodine heptofluride forms 32x102
a planet orbits a star once every 299 107 s in a nearly circular orbit of radius 151 1011 ma with respect to the star
in 97 s a fisherman winds 28 m of fishing line onto a reel whose radius is 30 cm assumed to be constant as an
calculate the standard entropy change for the reaction 2nas cl2 g --gt 2nacl s using the data from the following table
a cannon has a barrel 5 m long and fires a 49 kg projectile with a muzzle velocity of 452 ms what is the average force
at a pressure of 1 atm the heat of vaporization of water is 22260000 jkg this is the heat required to convert 1 kg of
895ml of chlorine trifloride gas at 694 mmhg and 36 degree c what is the mass of the
a heat engine absorbs 2400 j of heat from a hot reservoir and releases 1400 j of heat to a cold reservoir each second
calculate the standard entropy change for the following reaction at 25 degc mgoh2s 2hclg --gt mgcl2s
in nuclear power plant the reactor produces steam at 518 celcius and the cooling tower eliminates waste heat into the
calculate the ph of each of the following solutions a 0100 m propanoic acid hc3h5o2 ka 13 x 10-5 b 0100 m sodium
a parachutist of 60 kg descends at a constant speed of 44 ms what is the rate of increase of entropy of the parachute
calculate the fermi energy and fermi velocity for copper with 85 x 1028 conduction electrons per cubic metre use the
two people wish to push a big beer freezer weighing 2000 n up a ramp inclined at an angle of 370o with the horizontal
a subway train has three cars each weighing 120 x 105 n the frictional force on each car is 103 n and the first car
1 while driving at night your pupils dilate to 31mm diameter an oncoming car has two headlights spaced 15m apart if
1 a screen that is 10m wide is 20m away from a pair of slits illuminated by 633-nm light with the screen centered
a scientist is running at speed u toward a large smooth wall while holding a tuning fork that vibrates at frequency f