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a 216-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp the ramp is inclined at
a 12kg block is dropped from 48 cm above a spring inequilibrium the force constant for the spring is 124nm calculate
a crate of mass 450 kg is being transported on the flatbed of apickup truck the coefficient of static friction between
two points are given in polar coordinates by rtheta 280 m500deg and r theta 580 m -620degrespectively what is the
standing at a crosswalk you hear a frequency of 550 hz from the siren of an approaching ambulanceafter the ambulance
a hockey puck is hit on a frozen lake and starts moving with aspeed of 120 ms five seconds laterits speed is 540 msa
an automobile traveling 100kmh overtakes a 150 km long traintraveling in the same direction on a track parallel to
a curve of radius 60m is banked for a design speed of 100kmhif the coefficient of static friction is 30 wet pavement at
a small sphere that carries a chargeq is whirled in a circle at the end of an insulatingstring the angular frequency of
a wire of initial length l0 and radiusr0 has a measured resistance of 40 the wire isdrawn under tensile stress to a
two vectors have magnitudes of 10m and 15 m the angle between themwhen they are drawn with their tails at the same
a toy racing car moves with constant speed around the circle whenits coordinates are x 0 y 3m its velocity is6msi
the typical operating voltage for anelectron microscope is v 50kv a what isthe smallest feature one could hope
a 120-v motor has mechanical power output of 210 hp it is 800 efficient in converting power that it takes in by
a a nickel surface is exposed to light of wavelength235 nm the work function of ni is 51 ev what is the maximum speed
a hanging magnesium wire with diameter013 cm is initially 20 m long when a 28kg mass is hung from it the wire stretches
a square coil enclosing an area with sides 20 cm long is wrappedwith 2 500 turns of wirea uniform magnetic field
a proton moving with a speed of 30 times 105 ms perpendicularto a uniform magnetic field of 020 t will follow which
with light from a gaseous discharge tube incident normally on a grating with slit separation 214 mum sharp maxima for a
a television screen is illuminated using a beam of electronstraveling at 750times106 ms in a175times10minus2 t magnetic
you are standing in the middle of the recreation room of anuclear submarine that is lurking in the arctic ocean at
a long straight wire of length 15 mcarries a current of i 60a if a magnetic field of magnitude b 13 t is directed
an electron microscope is designed to resolve objectsas small as 014 nm what energy electronsmust be used in this
an energetic father stands at the summit of a conical hill as he spins his 23kg child around on a 60kg cart with a
a coil copper wire has aresistance of 100 ohms and a coil of silver has a resistance of101 ohlm both at 0degrees