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in a strong acid-strong base titration at room temperature the ph at the equivalence point is 7 the indicator
two point particles separated by 080 m have atotal charge of 200 muc a if the twoparticles repel each other with a
a spring is extended by 30mm when a force of 15 n is applied toit calculate the energy stored in the spring when
a 527-kg hot-air balloon takes off from rest at the surface of the earth the non-conservative wind and lift forces take
a sample of 420 ml of diethylether c2h5oc2h5 density 07134gmlis introduced into a 490-l vessel that already contains a
the corners of an equilateral triangle lie on a circle that has a radius of 25m what is the length of a side of the
suppose that the microwave radiation has a wavelength of 116cm how many photons are required to heat 265ml of coffee
estimate how many electrons there are in your bodymy approxmass is 794 kg make any assumptions you feel are necessary
given a stock solution of a food dye having a concentration of 10 x 10-5 and an absorbance of 0700 if a new solution is
light waves with two different wavelengths 632 nm and 474 nmpass simultaneously through a single slit whose width is
a cancer patient is undergoing radiation therapy in which protons with an energy of 12 mev are incident on a 025 kg
a motor has an armature resistance of 325omega if it draws820 a when running at full speed and connected to a 120-v
a projectile is launched with a speed of 40ms at an angle of 60 degrees above the horizantal use concervation of
a simple generator is used to generate a peak output voltageof 240 v the square armature consists of windings that are
a 985-l tank of argon gas at 2940 psi is allowed to vent into an airtight room that is and in which the temperature is
what are polymers how do they affect health and society what are some subtitles diagrams or ideas to describe
two trains are traveling toward each other at a constant speedof 10 mileshr at the point where the trains are 20
what is the structure of caffeine with the main focus on the basic nitrogen which is protonated at neutral ph determine
a lens is made of a transparent material having an index ofrefraction of 17 one side of the lens is flat and the
the equilibrium separation of h atoms in the h2 molecule is 0074nm calculate the energies and wavelenghts of photons
an object is dropped from rest from a height 32 times 106 mabove the surface of the earth if there is no air resistance
neglecting air resistance if you throw a ball straight upwith a speed of 20 ms how fast will it be moving when you
when a 250kg object is hanging vertically on a lightspringdescribed by hookes law the spring stretches 276cma what is
calculate the resultant velocity of an airplane that normallyflies at 200 kmhr if it encounters a 50 kmhr tailwind if
a wheel of mass m radius of gyration k spins smoothlyon a fixed horizontal axle of radius a which passes through a