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suppose that the position vector fot a particle is given as a function of time by rt xti ytj with xt atb and yt ct2
a helicopter lifts a 70 kg astronaut 16 m vertically from the ocean by means of a cable the acceleration of the
what will the units of the following rate constant if the rate constant is expressed in moll min rate k
a write a balanced net ionic equation to describe adding excess nh3 to a basic solution containing ni2b write a
a wire carries a current of 0616 a this wire makes an angle of 567deg with respect to a magnetic field of magnitude
a 0140-mole quantity of cocl2 is added to a liter of 120m nh3 solution what is the concentration of co2 ions at
a ball is thrown upward from a platform 40 m high with a speed of 23 ms at an angle of 37 o from the horizontal what is
a certain indicator ha has a ka value of 0000040 the protonated form of the indicator is red and the ionized form is
between the poles of a powerful magnet is a cylindrical uniform magnetic field with a diameter of 250 and a strength of
a 430 gram rock is whirled on the end of a string 45 cm long which will break under a tension of 22 na what is the
calculate the ph at the equivalence point for the titration of 0210m methylaminech3nh2 with 0210m hcl the kb of
sodium ions na move at 0861 ms through a bloodstream in the arm of a person standing near a large magnet the magnetic
at 1 atm how much energy is required to heat 95 g of h2o at -20 degrees c to h2o at 137 degrees
the magnetic force exerted on a 13-m segment of straight wire is 15n the wire carries a current of 32a in a region
an airbus a310 is initially moving down the runway at 45 ms preparing for takeoff the pilot pulls on the throttle so
sulfuryl chloride so2cl2 decomposes to sulfur dioxide so2 and chlorine cl2 in the gas phase the following data were
brain function and magnetic fields experiments have shown that thought processes in the brain can be affected if the
the potential difference between the plates of a capacitor is 247 v midway between the plates a proton and an electron
a single circular loop of radius 024m carries a current of 27a in a magnetic field of 096t what is the maximum torque
what is the ph of a sodium formate solution prepared by adding 0680 grams of sodium formate to 1000 ml of water at 250
a high-voltage power line carries a current of 120a at a location where the earths magnetic field has a magnitude of
during an experiment you will be required to prepare 100 ml of a 10 m solution of nano3 calculate the mass of nano3 to
an empty parallel plate capacitor is connected between the terminals of a 102-v battery and charges up the capacitor is
at 30 c by how mush is a reactions activation energy decreased by the addition of a catalyst if the catalyst triples