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you are in charge of a cannon that exerts a force 17900 n on a cannon ball while the ball is in the barrel of the
why is it impossible for 100 pure ethanol to be obtained from fractional distillation of the fermentation
what is the longest wavelength of light that can break the o-h bond the bond dissociation energy of an o-h bond is
a polar bear of mass 327 kg stands on an ice floe 129 cm thick what is the minimum area of the floe that will just
a 350g air track cart on a horizontal air track is attached to astring that goes over a pulley with a moment of inertia
12cl2g32f2g rarrclf3gthe bond energies of cl2 and f2 are 242kjmol and 155kjmol respectively calculate the bond energy
a projectile is shot from the surface of earth by means of a verypowerful cannon if the projectile reaches a height of
consider a balloon of volume 21m3 that contains 39 moles ofhelium gas at a temperature of 288 k ifthe gas is compressed
draw lewis structure for one important resonance form of hno3 hono2 include all lone pair
when 150 ml of 0400 m h are mixed with 200 ml of 0500 m oh- the final temperature of the solution is 265degc what was
a motor mass of 180kg sits on a horizontal 225 m masslessplank the motor is 100 m from one end of the plank find the
the melting point range is measure for two materials a and b for material a the melting point range is from 585 c to
two blocks of mass 700 kg and 300 kg are placed in contact withone another on a smooth horizontal surface a cosnstant
write a complete set of quantrum numbers nl and m that quantum theories allows for each of the following orbital a 2p
a bedroom bureau with a mass of 37 kgincluding drawers and clothing rests on the floora if the coefficient of static
a student has three gas samples of the same volume all the gases are at the standard temperature and pressure 273 k and
take east as the positive direction an 80 kg fisherman jumps from a dock into a 129 kg rowboat at rest on the west side
an aluminum rod is 185 cm long at 20 c and has a mass of 350g if 15000 j of energy is added to the rod by heat what is
what wavelength should the astrophysicist look for to detect a transition of an electron from the to the
a hot air balloon occupies a volume of 978 l at a temperature of 27 degc what is the temperature in degc if the volume
a 120g iron container holds 150g of water all at 250 degreesc two objects are dropped into the water the firstobject is
calculate the wavelenght and frequencey of light emitted when an electron changes from n4 to n3 in the h atom in what
before opening her parachute an 800-n skydiver reaches a terminal velocity of 120mph at this point what will her
a 45 caliber bullet of mass 162g strikes a stationary wood blockwith a mass of 500g at 331ms the wood block is attached
calculate the maximum non-expansion work per mole that may be obtained from a fuel cell in which the chemical reaction