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it is currently popular for automobiles to use 10 ethanol 90gasoline mixtures lsquogasoholrsquo as fuel according
a 550 kg ice skater is moving at 400 ms when she grabs theloose end on a rope the opposite end of which is tied to a
a skier of mass 61 kg ispulled up a slope by a motor-driven cablea how much work is required to pull him70 m up a 30deg
a 650 kg elevator startsfrom rest and moves upward for 430 swith constant acceleration until it reaches its cruising
a 6cm diameter horizontal pipe gradually narrows to 4cm whenwater flows throught this pipe at a certain rate the
a hypodermic syringe contains a medicine with the density of water see figure below the barrel of the syringe has a
a sphere of radius 200cm and mass 180 kg starts from rest and rolls without slippingdown a 300ordm incline that is 100
in a game of basketball a forward makes a bounce pass to the center the ball is thrown with an initial speed of 48 ms
a 80kg person at the fair rides the famous spinning bottomlesscylinder r 4m when the cylinder spins fast enough the
a particle with charge of 4 microcoloumbs is at the origin another identical particle is placed 2 m from the origin on
a ball having a mass of150 g strikes a wall with a speed of48 ms and rebounds with only 50 ofits initial kinetic
a 2l steel vessel is filled with 15atm of he gas at 25 degrees celsius then 5 grams of o2 gas are added to the vessel
the wavelength of violet light is about430 nanometers or 430 10-7 m the frequency of the violet light reflected from a
energetic free electrons can transfer their energy to bound electrons in atoms in 1913 james franck and gustav hertz
a student investigating circular motion places a dime 10 cm from the center of a 33 amp13-rpm record on a turntable
a 400kg soccer ball approaches a player horizontally with aspeed of 150 ms the player illegally strikes the ball with
a 400kg bead slides on a curve frictionless wire startingfrom rest at point a at point b the bead collides
a billiard ball moving at 500 ms strikes a stationary ballof the same mass after the collision the ball moves at 433
a solution containting 145g of an unknown substance in 265g of succinonitrile was found to freeze at 344 degrees
the soluability of co2 in water is at 25 degree c and 1 atm is 0034 moll what is the mass of co2 found in a 335ml can
a parallel-plate capacitor has plates of area 016 m2separated by a distance of 0004 m what is the strength of the
a 120 g bullet is fired horizontally into a 100 g woodenblock that is initially at rest on a frictionless
calculate the molality of a 0052 m solution of ethyl alcohol in water at 25 degree celsius assume the density of the
a 1200 kg car is traveling initially with a speed of 250 msin an easterly direction crashes into the rear end of a
5g of oxygen combines with 3720g of uranium to form uranium oxide what percentage by mass of this compound is o and