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the voltage drop along a 300m segment of a power line made from copper wire a very good conductor is 12 v while
a transformer has 390 turns in the primary coil and 230 in the secondary coil what kind of transformer is this
what material would be produces in the electrolysis of the following reagentnaclaq --gtnacll --gtkbrl
an r 678 resistor is connected to a c 478 f capacitor and to a vrms 117 v and f 112 hz voltage sourcecalculate the
a wire and a 10 ohm resistor are used to form a circuit in the shape of a square 20cm by 20cm a uniform magnetic
a particle with a charge of 84 microc and a speed of 45 ms enters a uniform magnetic field whose magnitude is 032 t for
an unknown material has a normal meltingfreezing point of -263deg c and the liquid phase has a specific heat capacity
lead 2 sulfide is the principle source of lead metal to obtain the metal the sulfide is first heated in air to produce
a hammer taps on the end of a 420 m-long metal bar at room temperature a microphone at the other end of the bar picks
the standard enthalpy of formation of kaq is -25214 kjmol how much heat is evolved when 01047 g of ks reacts with
an ospreys call is a distinct whistle at 2200hz an osprey calls while diving at you to drive you away from her nest you
a deep-sea diver uses a gas cylinder with a volume of 100 l and a content of 514 g of o2 and 329 g of he calculate the
stoichiometric amounts of nitrogen gas and hydrogen gas are reacted to produce 800 g of ammonia gas in a calorimeter
a window air conditioner unit absorbs 985 104 j of heat per minute from the room being cooled and in the same time
calculate the value of the faraday constant f from the charge on a single electron 16021 x 10 -19 c f coulombsmole of
the phdeg of formation values for water vapor and liquid water are -24182 and -28583 kjmol respectively calculate the
a series rc circuit which is made from a battery a switch a resistor and a 30-microf capacitor has a time constant of
the generator in an ac inductor circuit creates a maximum potential difference across the 274times103 h inductor of 243
how many grams of zinc will be deposited from a solution of zinc ii sulfate by 340 faraday of
calculate the mass of glucose metabolized by a 754 kg person in climbing a mountain with an elevation gain of 1370 m
in the following experiment a coffee-cup calorimeter containing 100 ml of h2o is used the initial temperature of the
the metabolism of glucose rm c6h12o6 yields carbon dioxide rm co2g and water rm h2ol as products energy released in the
in an experiment to measure the index of refraction of human skin it was found that if a beam of unpolarized light was
a total of 200 mol of a compound is allowed to react in a foam coffee cup that contains 172 g of water the reaction
a heater and a motor are powered in parallel from the same 220v power supply the motor draws 2a and the heater draws