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a certain laser outputs pure blue light photon energy 31 ev with power 400 milliwatts 04watts how many photons per
an archer shoots an arrow toward a 300g target that is sliding in her direction at a speed of 250 ms on a smooth
briefly explain why a volumetric pipet with a chipped or broken tip is usually uselesswhile a buret with a chipped or
when b-10 is bombarded by neutrons a neutron can be absorbedand an alpha particle emitted if the b-10 target
a bead of mass m acted upon by a uniform graviational forcecan slide freely on a frictionless circular hoop of radius r
a 4 kg box is raised from rest adistance of 6 m by a vertical force of110 na find the work done by the forceb find the
a what is the percentage of ag remaining in solution when 250 ml of 0115 m agno3 are added to 370 ml of 0108 m k2cro4
in a television electrons travel from the cathode to hit thescreen illuminating it by applying magnetic fields the beam
the capacitance in a series rcl circuit is c1 262 microf and the correspondingresonant frequency is f01 671 khz the
an incinerator produces a dry exit gas of the following orsat composition measured at 600f and 30 inches of hg absolute
concept simulation 71 illustrates the physics principles in this problem an astronaut in his space suit and with a
calcium chloride reacts with silver nitrate how many moles of agcl are produced when 050 mol of cacl2 reacts with an
why is it not possible to use ethanol to extract an organic compound from water even though most organics are more
two metal spheres each of radius 50 cm have a center-to-center separationof 320 m sphere 1 hascharge 110 10-8 c sphere
a 2g marble is fired vertically upward using a springgun the spring must be compressed 32cm if the marble is tojust
suppose that a 60g mixture of naphthalenec10h8 and anthracenec14h10 is dissolved in 300g of benzene when the solution
the vapor pressures of benzene and toluene are 400 and 139 torr respectively at 600c a calculate the vapor pressure of
if the acceleration of a 75 kg skydiver is 4ms2a what is the net force on theskydiverb what is the weight of the
the us navy long proposed the construction of extremely low frequency elf waves communications systems such waves could
a uranium atom is ionized seven times losing seven electrons inthe process its resulting mass is 390times10minus25
in an experiment designed to measurethe speed of light a laser is aimed at a mirror that is 470 kmdue north a detector
a 55 kg swimmer is standing on a stationary 180 kg floating raft the swimmer then runs offthe raft horizontally with a
a 205 cm tall object is placed 300 cm to the left of aconverging lens with a focal length f1 189 cm a diverging lens
an electrically charged bullet of mass 0010 kg leaves thebarrel of a gun traveling parallel to the ground and