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two students on roller skates stand face-to-face then push each other away one student has a mass of 99 kg and the
write a balanced net ionic equation for the reaction of na2saq and znso4aq also please include physical states and
an insulating sphere of radius r010 m has a uniform surface charge density equal to 59 mcm2 a point charge ofmagnitude
write a balanced net ionic equation for the precipitation of cacl2 and cs3po4 in an aqueous solution and include
in a single slit experiment the distance between two dark fringes of the second order is 10 cm on a screen which is 15
how many moles and number of ions of each type are present in the following aqueous solution 471 ml of 021g aluminum
a projectile is fired at an angle of 550 degrees above the horizontal with the initial speed of 350 ms what is the
an electric car accelerates for 80 s by drawing energy from its300-v battery pack during this time1190 c of charge
a moving particle encounters an external electric field that decreases its kinetic energy from 8920 evto 7400 ev as the
two satellites are in circular orbits around a planet that has radius one satellite has mass 880 orbital radius
a solution of koh is prepared and standardized against 05418g khp the phenolphthalein endpoint was reached by the
1 when solid mercury ii nitrate is heated it decomposes to form solid mercury ii oxide gaseous nitrogen dioxide and
a uniform solid metal disk of mass 690 and diameter 260 hangs in a horizontal plane supported at its center by a
suppose that the atomic mass unit amu had been defined as one-twentieth of the average mass of an atom of lithium
the solubility of acetanilide in hot water is 55g 100ml at 100 degree celcius and its solublity in col water 053g
the distance between the plates of a parallel plate capacitor with air between the plates is 9 mm the capacitor is
in the treatment of spine injuries it is often necessary to provide some tension along the spinal column to stretch the
a swing is made from a rope that will tolerate a maximum tension of800102 n without breaking initially the swing
two tiny conducting spheres are identical and carry charges of -207 muc and 517 muc they are separated by a distance of
assume a ball is spherical in shape with a 4 inch radius if the ball solid made from crystal with a density of 5000
the density of ice is 092 gcm3 and the density of seawater is 103 gcm3 a large iceberg floats in artic waters what
a in-ground swimming pool has a dimensions of 20 meters long by 15 meter wide and 300 meter deep it is filled with
a 300kg model rocket is launched vertically straight up with sufficient initial speed to reach a maximum height
you are playing college basketball and some time after crossing the midcourt line you shoot the ball at an angle of 53
suppose that coal of density 15 gcm3 is pure carbon it is in fact much more complicated but this is a reasonable rst