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a model rocket with mass 167kg starts from rest on the ground and accelerates upward with engine force 468n from
two dogs pull horizontally on ropes attached to a post the angle between the ropes is 690 dog a exerts a force of 250
a worker pushed a 650-kg block 100 m along a level floor at a constant speed with a force directed 390deg below the
during an eclipse the sun earth and moon are arranged in roughly a straight line there are two types of eclipse a lunar
what is the theoretical yield of vanadium that can be produced by the reaction of 400g of v2o5 with 400 g of calcium
you support one end of a stick of mass m and length l with the tip of your finger a quarter of the way up the stick
a roller coaster reaches the top of the steepest hill with a speed of 40 kmh it then descends the hill which is at an
draw both chair conformations of trans-1-isopropyl-2-methylcyclohexane and identify the more stable chair
the coefficient of kinetic friction for a 21 -kg bobsled on a track is 010 what force is required to push it down a 60
a compound of carbon hydrogen and oxygen contains 545 carbon and 910 hydrogen what is its empirical
two points in a rectangular coordinate system have the coordinates 46 29 and 34 47 where the units are centimeters
a 190 -kg box is released on a 37 incline and accelerates down the incline at 030 ms2a find the friction force impeding
a compound forms between phosphorous and nitrogen if 685 grams of phosphorous completely reacts with 515 grams of
a solenoid 270 cm long and with a cross-sectional area of 0510cm2 contains 410 turns of wire and carries a current of
what is the percent yield of calcium sulfate when 8750 l of aluminum sulfate and 172 g of calcium phosphate has an
a rifle with a weight of 30 n fires a 30 g bullet with a speed of 210 msa find the recoil speed of the riflemsb if a
sample of tap water consists of water fluoride ions calcium ions and several other dissolved ions the ions are evenly
the diameter of a sphere is measured to be 694 ina find the radius of the sphere in centimetersb find the surface area
an object is placed 13 cm in front of a converging lens with a focal length of 1 cm carefully draw a ray diagram on a
if 2100 ml of 00950 n naoh solution is used to titrate 2875 ml of h2so3 to the first equivilance point what is the
an object is fired at 300 ms at an angle of 350 degrees from a vertical cliff that is h meters where h is unknown
a freight train has a mass of 15 times 107 kg if the locomotive can exert a constant pull of 79 times 105 n how long
draw a newman projection of cyclohexane looking along two c-c bonds that are separated by one
a uniforn electric field with a magnitude of 420nc pointing in the positive x- direction acts on an electron which is
1 if the half-life of a chemical rxn process were 500 minutes what is the value of k2 the half-life of a chemical rxn