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a day-care worker pushes tangentially on a small hand-driven merry-go-round and is able to accelerate it from rest to a
you are driving east on 8th street tamiami trail at a speed of 30 mph in the rearview mirror you see an ambulance
an object with a mass of m 49 kg is attached to the free end of a light string wrapped around a reel of radius r 0265
a race car traveling at a constant speed of 50 ms driver around a circular track of radius 500 m what magnitude
a diffraction grating is made up of slits of width 290 nm with separation 910 nm the grating is illuminated by
unpolarized light with an intensity of 910 w m2 is incident on a polarizer with an unknown axis the light then passes
the log has a mass m 984 kg the truck has a mass m8750 kg according to the truck manufacture the truck can accelerate
an unknown gas is introduced into the aforementioned apparatus using the same tuning fork and the first resonance
an ancient bone contains 475 as much 14c6 as a piece of living matter with an equal carbon content how old is the
an ideal gas expands at a constant total pressure of 30 atm from 410ml to 790ml heat then flows out of the gas at
a geiger counter reading of a radioactive sample is initially 6920 counts per minute the same sample gives a reading of
if the current through a loop radius 50 cm is 2a what is the magnetic field produced by the loop
a rigid rod of mass 350 kg and length of 150 m rotates in a vertical xy plane about a frictionless pivot through its
a ship on the surface of the ocean receives a sonar echo back from an underwater object the echo path from the object
a uniform rod of length 0880 m and mass 115 kg is balanced on a sharp edge at 0580 m from the left end at the left end
a horizontal mass-spring system is in shm the mass is 025kg the spring constant is 12nm and the amplitude is 15cma what
to start a great night of doing physics homework you sit down to pour yourself a good cup of coffee your coffee mug
a rectangular antenna has a height of 3m and a width of 6 meters it operates at a frequency of 5 ghzwhat are the two
a circular radar operates at a frequency of 8 ghz and has a diameter of 08 mwhat is the angle at the half-power
you have a parallel-plate ideal capacitor with a capacitance of 23mf that you connect to a 4v battery until it is fully
waves travel 5000 ms along a wire that is 2m long what is the wave length of the first harmonicwhat is the frequency of
concrete has a specific heat capacity of 670 jouleskg-0 c a 2 kg concrete block that has a temp of 20 degrees celsius
a 125 meter long wire has a mass of 150 grams the wire is stretched with a force of 2 newtons what is the velocity of a
a gasoline engine fuel burns at a temp of 500 degrees celsius its radiator cools to 70 degrees celsius what is the
a freshly prepared sample of a certain radioactive isotope has an activity of 100 mci after 450 h the activity is 780