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the earth spins on its axis once a day and orbits the sun once a year 36524 days take the positive direction for the
if 8 moles of the gas a is placed in a 60l tank with 1 mole of b at 0 degrees celcius and 1 atm how many moles of gas
a 23892u nucleus is moving in the x direction at 50 105 ms when it decays into an alpha particle 42he and a 23490th if
what particle is emitted if cobalt-59 decays to iron-59 alpha particle beta particle neutron
1 consider the case of a wooden block moving along a horizontal tracka make a sketch of k u and wf as a function of
which statement is false concerning nuclear fission 1absorption of a neutron by a u-235 nucleus will release at least
a closed system is observed to have 47 objects in it initially the total energy of the system is 897 j after 51 h have
you have a small electromagnet that consumes 300 w from a residential circuit delivering 120 v at 600 hz using your ac
the pressure in a gas arises because the particles of a gas strike each other and the walls of their container exerting
if 020ml of methyl benzoate and 045ml of concentrated 18msulfuric acid plus 015ml of concentrated 18msulfuric acid and
a beam of electrons is incident on a gas of hydrogen what minimum speed must the electrons have to cause the emission
an electric kettle of 70 omega resistance containing 500 cm3 of water at 10ordmc is connected to the 110 v supply if 10
a well-insulated 00423 microf capacitor is connected across a line carrying a 375 kv rms sinusoidal voltage with
acetylcholine is a neurotransmitter and its concentration in the blood is quantitatively determined from the ph changes
a high-intensity desk lamp is rated at 75 w but its bulb requires only 9 v the lamp contains a transformer that
a person pushes a 160 kg shopping cart at a constant velocity for a distance of 180 m she pushes in a direction 260deg
a transformer has 683 turns in its primary winding and 109 in its secondary winding assuming it has 100 percent
what should be the normality of a sodium hydroxide solution if exactly 2500ml are to be used to titrate 2500of a
n-butanol c4h9oh undergoes complete combustion to form co2g and h2ol the enthalpy of combustion of n-butanol and the
a skier slides horizontally along the snow for a distance of 27 m before coming to rest the coefficient of kinetic
if the atom 213 82pb undergoes decay by emitting two beta particles and an alpha particle the atoms new identity is
a rotating uniform cylindrical platform of mass 250kg and radius 59m slows down from 40revs to rest in 17 s when the
how much heat energy in kilojoules is required to convert 370g of ice at -180c to water at
1 which ion will be larger cr3 or v3 explain why 2 how and why does silicon form a network covalent oxide what is a