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a coil with 50 turns radius 15cm with a total resistance of 4 ohms is placed in a uniform magnetic field directed
an airplane traveling at half the speed of sound emits a sound of frequency 531 khz a at what frequency does a
an electron moving in the positive x direction experiences a magnetic force in the positive z direction if bx0 then
a long circular pipe with outside radius r 300 cm carries a uniformly distributed current i 138 ma into the page a
a person wears a hearing aid that uniformly increases the intensity level of all audible frequencies of sound by 262 db
there is evidence that elephants communicate via infrasound generating rumbling vocalizations as low as 14 hz that can
a 101-kg horizontal platform is a uniform disk of radius 197 m and can rotate about the vertical axis through its
a turntable has moment of inertia 00300 kg m2 and is rotating at 250 revmin a 0300 kg ball of clay is dropped
a childs top is held in place upright on a frictionless surface the axle has a radius of r 396 mm two strings are
a solid brass bulk modulus 67 x 1010 nm2 sphere is subjected to a pressure of 10 x 105 pa due to the earths atmosphere
two blocks of mass m are suspended vertically as shown one block by a spring the other block to the first by a string
a small object oscillates back and forth at the bottom of a frictionless hemipherical bowl the radius of the bowl is r
a spring is compressed by 00541 m and is used to launch an object horizontally with a speed of 280 ms if the object
a 100kg truck is pulled across rough ground by a rope angled at 30 degrees to the horizontal the coefficient of sliding
why do proto-stars black holes x-ray binaries with jets active galaxies and quasars have very similar geometries ie how
a light rod l has a ball with mass m attached to its end forming a simple pendulum it is inverted so that the rod is
a mass of 5 kg of saturated liquid-vapor mixture of water is contained in a piston-cylinder device at 125 kpa initially
hot exhaust gases leaving an internal combustion engine at 400 c and 150kpa at a rate of 08 kgs is to be used to
a certain speed boat weighs 5880 n it can accelerate from 0 to 40 ms in 5 secondsa what is the mass of the boatb what
two atomic particles approach each other in a head-on collision each particle has a mass of 177 x 10-25 kg the speed of
an astronaut travels to mars with a speed of 8400 ms after 1 month 300 days of travel as measured by clocks on earth
what is the angular momentum of a figure skater spinning at 20revs with arms in close to her body assuming her to be a
a string 20 m long is held fixed at both ends if a sharp blow is applied to the string at its center it takes 0050 s
the sun is in the sky at an angle of 22 degrees from vertical yoursquove built a column exactly 120 meters in height
for high frequency sounds the ears principle method of localization is the difference in intensity sensed by the two