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at a playground a 22 rm kg child plays on a slide that drops through a heightof 25 rm m the child starts at rest at the
within cells small organelles containing newly synthesized proteins are transported along microtubules by tiny
marble statuses erode when exposed to acidic precipitation give a brief chemical explanation for this
a thin film of polystyrene is used as an antireflective coating for fabulite known as the substrate the index of
two people start at the same place and walk around a circular lakein opposite directions one walks with an angular
weightless bar is 18 meters upward forces of 165n at 3 meters from left and one of 310n at 14 meters from left
how many grams of ammonium chloride pka924 58491 gmol should be added to 500 ml of 01060 m ammonia to make a buffer
an archer shoots arrows at a target some of the arrows stick inthe target while others bounce off assuming that the
in an experiment designed to measure the speed of light a laser is aimed at a mirror that is 580 km due north a
a 14-kg 15-cm-diameter solid sphere is rotatingabout its diameter at 70 revmina what is its kinetic energyb if an
the energy from radiation can be used to cause the rupture of chemical bonds a minimum energy of 941 is required to
an aluminum baseball bat has a length of 0695 m at a temperature of 110degc when the temperature of the bat is raised
a small mirror is attached to a vertical wall and it hangs adistance of 182 m above the floor the mirror is facing due
a worker drags a 150lb crate across the floor by pulling on a rope inclined at 17degrees above the horizontal the
the moon revolves aound the earth in 273 days in nearly circular orbit with a radius of 38108 m assuming the moons
the light shining on a diffraction grating has a wavelength of430 nm in vacuum the grating produces asecond-order
a drop of water on a countertop reflects light from a flowerheld 31 cm directly above it the flowers diameter is 17 cm
erin holds the the 120-kg bob of a pendulum at a level at which its gravitational potential energy is 660 j and then
a certain light source is found to emit radiation whose peak valuehas a frequency of 300 x1013 hz find the temperature
a small mirror is attached to a vertical wall and it hangs adistance of 156 m above the floor the mirror is facing due
a tuning fork vibrating at 511 hzfalls from rest and accelerates at 980 ms2 how far below the point of release is the
a 222 kg steel ball strikes a massive wall at 104ms at an angle of alpha 584deg with theplane of the wall it bounces
a cylindrical storage tank has a radius of 116 m when filled to aheight of 380 m it holds 14100 kg of a liquid
a standing wave on a tight string experiment is set upin the laboratory one end of the string is attached to
a 30 kg block is dragged acrossa rough horizontal surface by a constant force of 16 n acting at anangle of 37deg above