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a 500 g bullet moving with an initial speed of 400 ms is fired into and passes through a 100 kg block the block
a 1600 kw heat engineoperates at 21 efficiency the heat energy expelled at thelow temperature is absorbed by a stream
two cars have identical horns each emitting a frequency offs 395 hz one of the cars is moving with aspeed of 238 ms
water flows over asection of niagara falls at a rate of 120 times 106 kgsand falls 500 m what is the power dissipated
sodium vapor lamps are used to illuminate streets and highways the very bright light emitted by these lamps is actually
give structural formulas condensedor bond-linefor all of the different alkenes that can be hydrogenated with h2pt to
an aluminum rod is 170 cm long at20degc and has a mass of 350 g if 14000 j of energy is added to the rod by heat what
the following reaction is used to generate hydrogen gas in the laboratory if 243 ml of gas is collected over water at
a solid toy weighs 98n in air the density of this toy is10kgm3 h2o 1000kgm31 - what is the volume2 - the toy is
a 400 gram block attached to the end of an ideal srpinghorizontally with the force constant k10nm undergoes
the blah taste of many processed orange juice brands results in part from the fact that the juice must be pasteurized
use the octet rule to predict the formula of the simplest compound formed from hydrogen and
two astronauts on opposite ends of a space ship are comparing lunches one has an apple the other has an orange they
arrange the acids hobr hbro3 and hbro2 in order of increasing acid strength and explain
an electron traveling at 194 ms enters a11 t magnetic field the angle betweenthe velocity and the field is 30o find the
three long wires hang vertically the distance between wire 1and 2 is 20 cm on the left wire 1 carries an upwardcurrent
when the following reaction is balanced in basic solution using the lowest possible whole number coefficients the
an experiment is conducted to investigate the photo electric effect when light of frequency 10 x 1015 hz isincident on
a solid uniform spherical boulder starts from rest and rolls down a 500-m high hill the top half of the hill is rough
what happens structurally when an amine is dissolved in an aqueous acid compared to when a carboxylic acid is dissolved
a gas expands from 282 ml to 971 ml at constant temperature calculate the work done in joules by the gas if it expands
why is it unwise to suddenly apply the brakes of a car on a wet or icy pavement everyday examples where areduction in
975-m ladder with a mass of 232 kg lies flat on the ground apainter grabs the top end of the ladder and pulls straight
a thin film of oil n 126is located on smooth wet pavement when viewed from a direction perpendicular to the pavement
the fuel used in many disposable lighters is liquid butanec4h10 how many carbon atoms are in 150g of