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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
a cylinder of mass m1 6kg and radius r 4 m is spinning about anaxis through its center at 7 radsec a flat bar with a
a wing produces lift by diverting the flow of air producing higherpressure below the wind and lower pressure above the
1-if 107 ml of 0105 m naoh is required to reach the first equivalence point of a solution of 0050 m citric acid a
a proton moving eastward with a velocity of 50 x 103ms enters a magnetic field of 20 t pointingnorthward what is the
a 22-kg cylinder radius 010 m length 050 m is released from rest at thetop of a ramp and allowed to roll without
a student starting from rest slides down a water slide on theway down a kinetic frictional force a nonconservativeforce
a child slides down a snow covered slope that makes an angle of 20 degrees with the horizontal if the coefficient of
the molar heat capacity of silver is 2535jmolc how much energy would it take to raise the temperature of 119g of
a train increases its speed from 45 to 90 kmh find the speed i at half time ii at half way assuming the acceleration to
it takes 520j to raise the temperature of an 119g piece of unknown metal from 130c to 248c what is the specific heat
a cylinder with circular ends and a hemisphere are solidthroughout and made from the same material they are resting on
on a frictionless horizontal air table puck a with mass0250 kg is moving toward puck b with mass 0330 kgwhich is
suppose you dip a string in a supersaturated sugar solution to make rock candy the string is dipped in corn syrup then