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determine the phase and group velocities for a monatomic lattice plot the velocities versus the wave vector k and give
in a skating stunt known as cracking-the-whip a number of skaters hold hands and form a straight line they try to skate
a particle of mass m kg is attached to one end a of a model spring oa of natural length l0 105 m and stiffness k nm
the magnetic field in the interstellar space of out galaxy is through to be about 10-10 t in magnitudehow much energy
indicate whether the ph is equal to 7 greater than 7 or less than 7 at the equivalence point for the following
how much force acts on one surface of a rectangular bedroom wall that is 220 m by 320 m when atmospheric pressure is
a proton a neutron and an alfa particle accelerated through the same potential difference enter a region of uniform
a centrifuge accelerates uniformly from rest to 15000 rpm in 220 s through how many revolutions did it turn in this
an isolated copper sphere of radius 300cm initially uncharged is illuminated with ultraviolet light of wavelength 180nm
a metal wire of mass m slides without friction on two horizontal rails spaced a distance d apartthe track lies in a
1 a chemist wanted to amke 3-hydroxy-pentanal via an aldol condensationa what two aldehydes could be used to make this
two wooden crates rest on top of one another the smaller top crate has a mass of m1 240 kg and the larger bottom crate
a disk of radius 217 cm rotates about its axis points on the disks rim undergo tangential acceleration of magnitude 231
a roller coaster of mass 250kg has a speed of v12ms at point a located at a height h15m the car can move without
find the total mechanical energy of a mass-spring system with m 146kg and maximum speed 0600ms e value
a 400-w immersion heater is placed in a pot containing 20 litters of water at 20 ca how long will it take to bring the
suppose a star the size of our sun r0 695500 km rotates at a speed of 10 revolution every 12 days if it were to
blood is conductive enough that it can be treated as a moving conductor when it flows perpendicularly with respect to a
what is the total mass of the earthrsquos atmosphere the radius of the earth is 637 x 10 6 m and atmospheric pressure
two circuits contain an emf produced by a moving metal rod like that shown in the drawing the speed of the rod is the
a uniform magnetic field is normal to the plane of a circular loop 10 cm in diameter made of copper wire diameter 25 mm
a circular roller coaster has radius 30 m the speed at the bottom is 370 ms a 50 kg girl is sitting on a scale what
a calculate the maximum value of resistance that can be obtained by combining resistors of 31 47 and 64b calculate
1 write a mechanism for the haloform reaction2 a sample of pure r enatiomer of 3-phenyl-2nutanone racemizes when
a proton a deutron and an alfa particle accelerated through the same potential difference enter a region of uniform