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a tennis ball of mass mt is held just above a basketball of mass mb with their centers vertically aligned both are
two ice skaters are gliding together along the ice both moving at a constant velocity sliding without exerting a force
a 1800 kg pile driver is used to drive a steel i-beam into the ground the pile driver falls 400 m before coming into
a sled of mass m is given a kick on a frozen pond the kick imparts to it an initial speed of vi 250 ms the coefficient
1 calculate the number of h atoms in 38 cm3 of lih densisty of lih 079gcm32 if seawater contains 35 mass of dissolved
a block of mass 120 kg slides from rest down a frictionless 350deg incline and is stopped by a strong spring with k
a sledge loaded with bricks has a total mass of 170 kg and is pulled at constant speed by a rope the rope is inclined
combustion analysis of 638 mg of a c h and o containing compound produced 1450 mg of co2 and 5938 mg of h2o what is the
an object of mass 293 kg moving with an initial velocity of 490i ms collides with and sticks to an object of mass 308
give the percent yield when 2816 g of co2 are formed from the reaction of 4000 moles of c8h18 with 4000 moles of o2 2
a how much work is required to pull him a distance of 580 m up a 270deg slope assumed frictionless at a constant speed
applying hesss law calculate the delta h for the reactionch4g 4cl2g --gt ccl4g 4hclg use the following data cs 2h2g
a friend buys a used pickup truck that comes complete with a cb radio however the antenna is broken off and your friend
tarzan swings on a 280-m-long vine initially inclined at an angle of 370deg with the verticala what is his speed at the
how much heat is absorbed by nickel when 5000 g nickel is warmed from 224 deg c to 584 deg c the specific heat of
a bronze cannon ball with a mass of 45 kg is fired vertically from a small cannon and reaches a height of 130 m if the
a tetherball leans against the smooth frictionless post to which it is attached see the figure the string is attached
which substance in the following would not need to be included in an enthalpies of formation tablea br2 gb br2 sc br2
a identify the substance that is oxidized and the substance that is reduced in the following reaction 2nacll --gt 2nas
a 5kg object is initally at rest the object is acted on by a 9n force toward the east for 3 seconds no force acts on
write the products of the reaction if there is a reaction in each casea khco3aq hclaq --gtb naaq zns --gtc cd2aq als
a satellite is in a circular orbit around and unknown planet the satellite has a speed of 170 x104 ms and the radius of
in a circus performance a monkey on a sled is given an initial speed of 46 ms up a 23 incline the combined mass of the
a sample of 101 g ammonium nitrate nh4no3 was dissolved in 1250 g of water in a coffee-cup calorimeter the temperature
a child slides without friction from a height of 101 m above the water along a curved water slide in the shape of a