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a rocket burns fuel at a rate of 100 kgs and exhausts the gas at a relative speed of 30 kms find the thrust of the
in a pool game the cue ball which has an initial speed of 30 ms make an elastic collision with the eight ball which is
a voltaic cell with of mnmn2 and cdcd2 half-cells has the following initial concentrations mn2 0090 m cd2 0087 mwhat
four identical springs are used as part of a cars system one on each wheel the springs compress by 8cm when the weight
1 a curious student who enjoys bl ab chemistry puts on safety glasses obtains a beaker containing deionized water and
the engine of an aircraft propeller delivers an amount of power 171hp to the propeller at a rotational velocity of 2360
a concentration cell consists of two h2h half cells half cell a has h2 at 074 atm bubbling into 024 m hcl half cell b
calculate the force required to pull a copper ball of radius 150 cm upward through a fluid at the constant speed 700
1 a 19 ml sample of a solution of li2s was diluted with water to 81 ml a 25 ml sample of the dilute solution was found
a person stands on a scale in an elevator as the elevator starts the scale has a constant reading of 600 n as the
while driving along a country lane with a constant speed of 12 ms you encounter a bump in the road that has a cross
1 a 130 ml stock solution contains 5 m bacl2 when 27 ml of the stock solution is diluted to 75 ml how many moles of ba2
a roller-coaster car has a mass of 506 kg when fully loaded with passengers the path of the coaster from its initial
an analysis of her diet reveals an average daily intake of 80 grams of fat 200 grams of carbohydrate and 50 grams of
a 350-kg child swings in a swing supported by two chains each 292 m long the tension in each chain at the lowest point
figure 2a shows the changes in atmospheric carbon dioxide co2 concentration measured in a biomass chamber containing a
you launch a rock from the origin 00 with an initial speed of 50 ms at an angle of o30deg from horizontal ignore air
a crate of eggs is located in the middle of the flat bed of a pickup truck as the truck negotiates a curve in the flat
you swing a 260 stone in a circle using the full length of a thin 800 rope at what speed should you swing it so its
a scientific instrument that weighs 784 on the earth weighs 297 at the surface of mercury what is the acceleration due
1 why are some people able to squeeze a clothespin more times in a minute than others2 describe three basic trends in
a hunter aims directly at a target on the same level 150 m awaya if the bullet leaves the gun at a speed of 240 ms by
two cars starting from rest at x0 at t0 are racing car a and b both accelerate in a straight line at a constant
1 the genetic code is different in nearly all organisms2 cells regulate gene expression so that each gene will