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a railroad car with a mass of 25000 kg rolls into a second stationary car with a mass of 50000 kg the cars latch
if 052 moles of terephthalic acid are reacted with 050 moles of ethylene glycol what is the number average degree of
consider a 53-cm-long lawn mower blade rotating about its center at 3400 rpma calculate the linear speed of the tip of
write the molecular ionic and net ionic equations for the following reactions indicate the spectator ion reason why the
a cyclist approaches the bottom of a gradual hill at a speed of 11 meters per second the hill is 50 meters high and the
you are in a mountain range with atmospheric air pressure of 520 and you wish to boil some eggs what is the
a simple pendulum has a length of 070 m and a mass of 075 kg the amplitude of oscillations of the pendulum is 300 cm
300 ml of 010 m cano32 and 150 ml of 020 m na3po4 solutions are mixed after the reaction is complete which of these
you have a small electromagnet that consumes 350 w from a residential circuit delivering 110 v at 600 hz using your ac
an airplane propeller is 308 in length from tip to tip and has a mass of 152 when the airplanes engine is first started
a mass m1 899 kg at rest on a horizontal frictionless surfaceand connected to a wall by a spring with k 700n m
if light is measured traveling through some medium at 090c where c represents the speed of light in a vacuum what is
a 600 kg block starts from rest and slides down a frictionless surface incline when the block has slid a distance 200 m
a 60 g ball is tied to the end of a 50 cm --long string and swung in a vertical circle the center of the circle as
the radius of the earths very nearly circular orbit around the sun is 15x1011a find the magnitude of the earths
a voltaic cell consists of an alal3 half-cell and a agag half-cell calculate ecell when ag 000665 m and al3 06273 m
what is the value of the equilibrium constant at 25 oc for the reaction between the pair mns and agaq to give ags and
a cylinder with radius r and mass m has a density that increases linearly with distance r from the cylinder axis p ar
a sealed glass jar has a small amount of water on the bottom the rest of the volume in the jar is taken up by helium
a pendulum consists of a 31 kg stone swinging on a 42 m string of negligible mass the stone has a speed of 79 ms when
a 52 cm times 38 cm razorblade is placed on the surface of a beaker of water though the density of the razorblade is
for the reaction no2 o3 n2o5 the activation energy is 18kjmol and the overall delta e is -136kjmol how many times
a 150 grinding wheel is in the form of a solid cylinder of radius 0140 part a what constant torque will bring it from
you are in a mountain range with atmospheric air pressure of 520 mmhg and you wish to boil some eggs what is the
a steel ball density 7860kgm3 with a diameter of 68 cm is tied to an aluminum wire 88 cm long and 20 mm in diameter