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an object of mass 2 kg is pulled by a constant force f 5 n oriented at an angle of 30deg with respect to the
if 15000 ml of naoh solution is required to react completely with 03598 g of khp what is is the molarity of the naoh
a 3000ml flask is initially open to air at 19c and 1atm pressure its then closed and immersed in boiling water when it
a photon having e 257 kev energy scatters from a free electron inside a metal what is the maximum energy the electron
an atom is ionized so that it has only one electron when the electron drops from the n 3 shell to the n 1 shell an
a converging lens f1 240 cm is located 560 cm to the left of a diverging lens f2 280 cm an object is placed to the
consider a line that is 14 m long a moving object is somewhere along this line but its position is not knowna find the
consider the circuit in the figure suppose the circuit elements have the following values 125 v r 650 and l 280 mha
during the fermentation of wine a buffer system consisting of tartaric acid and potassium tartrate is formed by a
an 85kg crate is pulled 48m up a 30 degree incline by a rope angled 16 degrees above the incline the tension in the
you are trying to overhear a juicy conversation but from your distance of 150 m it sounds like only an average whisper
for an observer looking at a small ball in an inertial reference frame irf which of the following statements is true
you have two solutions of the same molar concentrations one contains lactic acid the other sodium lactate you want to
a material has an index of refraction of 1980 what is the critical angle for internal reflection inside a block of this
calculate the ppm salt nacl in a 5000 ml sample of an unknown brine titrated with 3764 ml of 01024 m silver nitrate
a light from a 556-nm monochromatic source is incident upon the surface of fused quartz n 156 at an angle of 51deg
the formula for rust can be represented by fe2o3 how many moles of fe are present in 100 g of the
motor oil with a viscosity of 0250 nsms is flowing through a tube that has a radius of 300 mm and is 100 m long the
how many moles of o are needed to combine with 0289 mole of c to form the following compounds co and
a cylinder semicircular in cross-section 100 m long and 500 m in radius is completely submerged in water what is the
calculate the initial concentration of iodide ion after the solutions in tubes a and b are mixed before the reaction
a u-tube is open to the atmosphere at both ends water is poured into the tube until the water rises part-way along the
a 1486-kg car is moving westward with a speed of 203 ms and a 2898-kg truck is traveling east with a speed of 178 ms
a mixture of methane and air has capability of being ignited if mole percent of methane is between 5 and 15 a mixture