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two neutrons are in an infinite square well with l 20 fm what is the minimum total energy that the system can have
some ions do not have a corresponding neutral atom that has the same electron configuration for each of the following
a 25 g bullet fired horizontally hits a 145 kg block of wood placed on a horizontal surfacethe bullet penetrates into
to reduce the power requirement of elevator motors elevators arecounterbalanced with weights connected to the elevator
two packages at ups start sliding down the 20degree ramp package a has a mass of 5 kg and coefficient of friction of
water runs out of a horizontal drainpipe at the rate of 120 litersper minute it falls 320m to the ground assuming the
a cosmic-ray proton in interstellar space has an energyof 165 mev and executes acircular orbit having a radius equal to
each of the three helicopter rotor blades shown in the figureis 520 m long and has a mass of 240 kg therotor is
if a magnetic compass is placed between the plates of a fully charged capacitor why wouldnt the compass will align
a 10g sample of an unknown salt molar mass 40 gmol is added to 750ml of water the temperature of the water rises 32oc
a peak intensity of an em wave is 340x107 wm2 if the peak magnetic field is 287x10-6 t what is the peak electric
by using photons of specific wavelengths chemists can dissociate gaseous h-i to produce h atoms with accurately known
a wind turbine is initially spinning at a constant angular speedas wing strength gradually increases the turbine
as current flows through a uniform wire the wire gets hotterbecause the electrons slow down and therefore transform
a baking dish is removed from a hot oven and placed on a coolingrack as the dish cools down to 320degc from 193degc its
two identical batteries of emf epsilon 917 v and internalresistance r 0279 omega are to be connected to an external
determine the mole fractions and partial pressures of co2 ch4 and he in a sample of gas that contains 125 mole of co2
an object weighing 305 n in air isimmersed in water after being tied to a string connected to abalance the scale now
the coefficient of static friction between the m 290 kg crate and the 350degincline of the figure below is 0320what
a hydrogen atom consists of a proton and an electron if the orbital radius of the electron increases then the potential
at 46 oc a sample of ammonia gas exerts a pressure of 319 atm what is the pressure when the volume of the gas is
two converging lenses each of focal length 165 cm are placed 398 cm apart and an object is placed 300 cm infront of the
propose a mechanism involving a hydride shift or an alkyl shift for this solvolysis reaction all compounds involved in
a body is traveling at 40 ms alongthe positive direction of an x axis no net force acts onthe body an internal
if i add 25ml of a 2m naoh from a buret to 25ml of 2m hclo 9 hypochlorous acid in a beaker the total volume of the