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in an isometric exercise a person places a hand on a scale and pushes vertically downward keeping the forearm
6- in the reaction 2kmno4 5cooh2 3h2so4 yields 10 co2 2mnso4 k2so4 8h2o is the manganese being oxidized reduced or
a gymnast is performing a floor routine in a tumbling run shespins through the air increasing her angular velocity from
starting from rest a 94-kg firefighter slides down a fire polethe average frictional force everted on him by the pole
a mixture of 0162 moles of c is reacted with 0117 moles of o2 in a seated 100 l vessel at 500 k producing a mixture of
consider a perfectlyelastic collision between two objects of equal mass object 1 is initially moving with a velocity v
the drawing shows an a-shaped ladder both sides of the ladder areequal in length this ladder is standing on a
assume a scuba diver is working at a depth where the total pressure is 50 atm about 50 m below the surface what mole
a cyclist traveling at 5 ms uniformly accelerates up to 10 ms in20 sec each tire of the bike has a 35 cm radius and a
a freight car with a mass of 2500 kg rolls down an inclinedtrack through a vertical distance of 15m at the bottom of
what is the balanced chemical reaction resulting when 50 ml of 2 m kcl and 300 ml of 030 m pbno32 are added
at 320 k and 16 atm pressure the molar volume of ammonia nh3 is about 10 less than the molar volume of an ideal gas the
a laser emits a cylindrical beam of light 13 mm in diameter if the average power of thelaser is 39 mw what is the rms
a volleyball is spiked so that incoming velocity is 37ms is changed to an outgoing velocity of -16 msthe mass of the
a balloon filled wit 500 l of air at sea level is submerged in the water to a depth that produces a pressure of 325 atm
an object initially at rest explodes in two fragments of masses 35 kg and 63 kg that move in diametrically opposite
a gas mixture contains 48 g of n2 74 g of h2 and 66 g of ch4 what is the mole fraction of h2 in the
a particle is uncharged and is thrown vertically upward from ground level with a speed of 250ms as a result it attains
a 92 kg man climbs onto a car worn out shock absorbers and thiscauses the car to drop down 45 cm as he drives along he
students at the university of north texas and the university of washington built a car propelled by compressed nitrogen
the energy in a lightning bolt is enormous consider forexample a lightning bolt in which 29c of charge moves through
a long air-core solenoid of 420 turns length 32 cm anddameter 30 cm carries a current 30 a at certain time the current
pentaborane-9b5h9 is a colorless highly reactive liquid that will burst into flames when exposed to oxygenthe reaction
a stone is thrown horizontally at a speed of 50ms from thetop of a cliff that is 784m high how long dies it take the
in an lc circuit where l 25 mh and c 18 muf with anelectromagnetic oscillation the maximum charge on the