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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
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
calculate the frequency of the light emitted when an electron in a hydrogen atom makes each of the following
the drawing shows four point charges the value of q is33 muc and the distance d is 080 m find the totalpotential at the
the reaction so3g h2ol---gt h2so4aq is the last step in the commercial production of sulfuric acid the enthalpy change
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
what is the maximum amount of useful work that can be accomplished under standard conditions by this system if 1 mol of
an underwater diver sees the sun 50 degrees above horizontal how high is the sun above the horizon to a fisherman in a
water flows at 059 ms through a pipe15 cm in diameter when the pressure is160000 pa the pipe the goes up10 m before
in the figure four long straight wires are perpendicular to the page and their cross sections form a square of edge
what is the balanced chemical equation for the reaction used to calculate standard enthalpy of formation of srco3sif