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when brewsters angle of polarized light due to a reflection of light off of the surface of water makes a ray of light
a photon with a wavelength 480pm scatters from an electron initially at resta find the maximum kinetic energy for the
a typical sound level for a buzzing mosquito is35db and that of a vacuum cleaner is approximately 69db approximately
an l-r-c series circuit has c48010-6f l 0500h and source voltage amplitude v 545v the source is operated at the
there is evidence that elephants communicate via infrasound generating rumbling vocalizations as low as 14 hz that can
an outside loudspeaker considered a small source emits sound waves with a power output of125wa find the intensity105m
a putty of mass 006 kg is droppe at height h 1 m above a horizontal rod two 2 kg balls are attached to the ends of the
an orchestra plays a loud symphonic passage at an intensity level of 72db while a very soft solo is only 35db what is
which of the following represents work a compressed spring that is allowed to expand the normal force on a stationary
a hoop is rolling without slipping along a horizontal surface with a speed of 450 ms when it starts up a ramp that
a 44 kg women is in a 62 kg 5 m long boat that is initially at rest she walks from a spot 100 m from one end to a spot
a find the width of the central maximum on a screen located 160 m from the slitb determine the width of the first-order
sucrose which is commonly known as table sugar reacts in dilute acid solutions to form two simpler sugars glucose and
on apollo moon missions the lunar module would blast off from the moons surface and dock with the command module in
a box of 25cm by 25cm by 25cm is placed in water when a rat is placed on top of the box the box goes down by 2cm what
a 30 kg launching machine fires a 250 gram projectile horizontally at 100 ms this causes the machine to slide backward
in the lowest energy chair conformation of cis-13-dimethylcyclohexane how many axial positions are occupied by hydrogen
a 260-g lead bullet at 280degc is fired at a speed of 230 ms into a large block of ice at 0degc in which it becomes
an aluminum cup of mass 210 g contains 800 g of water in thermal equilibrium at 800degc the combination of cup and
the temperature of a gold bar rises by 100degc when it absorbs 0677 kj of energy by heat the mass of the bar is 525 g
a block of mass 900 g on the end of spring undergoes simple harmonic motion with a frequency of 350 hza what is the
an arrow is shot vertically upward and then 184s later passes the top of a tree 409m high how much longer will the
the region in a baseball diamond between the bases is a square that is 90 ft on each side on a given rainy day 25
two samples of copper and lead both weighing 1500g each recive equal amounts of heat the temp of copper increased from
a jet airliner moving initially at 300 mih due east enters a region where the wind is blowing at120mih in a