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a ray of light incident upon a mirror makes an angle of 37degrees with the mirror what is the angle between the
unpolarized light passes through two polarized sheets theaxis of the first is vertical and that of the second is
when 10 mol of fe is consumed in the reaction 3fe 2o2 - fe3o4 how many mol of fe3o4 are
water at the top of niagara falls has a temperature of 10degrees celius if it falls 50 meters and all of its
a golf ball m 460 g is struckwith a force that makes an angle of 458deg with the horizontal the ball lands198 m away
warren broke his thermometer after determine the freezing point of the pure solvent he used a new thermometer to find
an 806 kgastronaut is working on the engines of his ship which is driftingthrough space with a constant velocity the
on planet tehar the freefall accelration is the same as that on earth but there is also a strong downward eletric field
a parallel-plate capacitor has circular plates of 610 cm radius and 110 mm separationa calculate the capacitanceb what
a distant galaxy emits light that has a wavelengthof 5007 nm on earth the wavelength of this light ismeasured to be
you have 25 ml of 05 m standard naoh solution density 103 gml at 20oc and copious quantitiesof distilled water explain
at the local swimming hole afavorite trick is to run horizontally off a cliff that is 83mabove the water once diver
an object is attached to the lower end of a 100-coil spring that is hanging from the ceiling the spring stretches by
a student does a mini-titration with an unknown acid by adding 13 drops of 2m naoh to 9 drops of the unknown solution
when a car is traveling at 25 ms on level ground the stoppingdistance is found to be 22m this distance is measured by
is more elastic potential energy stored in a spring when thespring is compressed by one centimeter than when it is
if you report two measurements of mass 742 g and 756 g are the measurements accurate are they
a certain kind of glass has an index of refraction of 1660 for blue light of wavelength 420 nm and an index of 1615 for
a gold conductor with an electric field of 001 vm applied is100 cm long and 005 mm in radius assuming one conduction
in a normal breath about 05 l of air at 10 atm and 293 k is inhaled about 250 of the oxygen in air is absorbed by the
an air conditioner connected to a 120v rms ac line is equivalent to a 120 resistanceand a 140 inductive reactancein
compound on tlc can be roughly distinguished into their classes based on the characteristics produced after they are
peanuts and peanut oil are organic materials and burn in air howmany burning peanuts does it take to provide the energy
a playground merry-go-round has a disk-shaped platform thatrotates with negligible friction about a vertical axis the
in the figure a point charge 13mu c is adistance d2 directly above the center of a square of side d 026cm what is the