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a piece of aluminum with a mass of 20 kg and density of 2700kgm3 is suspended from a string and then completely
during an isothermal process 50 j of heat is removed from anideal gas what is the change in internal
a particle of mass 0450 kg is attached tothe 100 cm mark of a meter stick of mass 0125 kg the meter stick rotates on a
a 53-kg woman contestant on a reality television show is at rest at thesouth end of a horizontal 149-kgraft that is
an airplane has an effective wing surfacearea of 10 m2 that is generating the lift force inlevel flight the air speed
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
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
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
two astronauts on opposite ends of a space ship are comparing lunches one has an apple the other has an orange they
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
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
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
hot air balloon with cargo mass of 299 kg volume 777 m3 balloon floating constant 625m above ground density of air
in a fusion reaction two deuterium nuclei combine to form a helium nucleus one of the incident nuclei is initially
the drawing shows four point charges the value of q is33 muc and the distance d is 080 m find the totalpotential at the
a 380 turn solenoid of length 320 cm andradius 310 cm carries a currentof 480 a find the followinga the magnetic field
one method for measuring the speed of sound uses standing waves a cylindrical tube is open at both ends and one end