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the electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 120
an air bubble has a volume of 149 cm3 when it is released by a submarine 110 m below the surface of a lake what is the
the oh concentration of 045 m ammonia nh3 is 67x10-4 m writea the reaction equation for its ionizationb the equilibrium
a solid disk of mass m1 95 kg and radius r 018 m is rotating with a constant angular velocity of 380 rads a thin
a 521-kg crate rests on a level floor at a shipping dock the coefficients of static and kinetic friction are 0589 and
a rope can withstand 10 x 103 n of tension if the rope is being used to pull a 100-kg package across a cfrictionless
a 10 g bullet moving 1000 ms strikes and passes through a 20-kg block initially at rest the bullet emerges from the
in a movie jason borne evades his captors by hiding underwater for many minutes while breathing through a long thin
a 24-v battery is connected in series with a resistor and an inductor with r 44 and l 76 h respectively a find the
a man walking on a tightrope carries a long a pole which has heavy items attached to the two ends if he were to walk
calculate the ph of the solution prepared by mixing 100ml of 100 m acetic acid and 240 ml of 100 m sodium acetate
a capacitor is constructed with plates of area a and separation s the area between the plates is lled with a weakly
a certain substance has a dielectric constant of 28 and a dielectric strength of 180 mvm if it is used as the
an object that is moving rightward is acted upon by the force shown the force has a component antiparallel to the
what is the purpose of adding phosphoric acid before titration of the iron iii with potassium
a low-voltage device like an electric bell obtains its electricity from a 120 v source but requires only 4ndash8 v
a hand-driven grinding wheel is a uniform 62-kg disk with a 41-cm radius it has a handle of negligible mass 64 cm from
a temperature of a specific amount of gas in a sealed container changes from 20degc to 40degc if the volume remains
a firm wants to determine the amount of frictional torque in their current line of grindstones so they can redesign
a sealed container of oxygen gas has a pressure of 442 atm at 3190 k if the container is cooled to 2390 k what is the
in a lab experiment you attach a 30 kg weight to a spring scale you lift the scale and weight with a constant reading
a gas cylinder contains a mixture of he and ne at stp which of the following quantities would have the largest
before opening his parachute a sky diver with a mass of 900 kg experiences an upward force from air resistance of 150
a simple atwoodrsquos machine uses a massless pulley and two masses m1 and m2 starting from rest the speed of the two
a 0271 kg bead slides on a curved wire starting from rest at point a as shown in the figure the acceleration of gravity