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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
the graph shows how the force component fcosalong the displacement varies with the magnitude s of thedisplacement find
when a light bulb is connected across the terminals of a battery the battery delivers 24 w of power to the bulb a
a strong electromagnet produces a uniform magneticfield of 160 t over a cross-sectional area of 0200 m2we place a coil
why does a tile or wooden floor feel colder ahtn a carpeted floor when both are at the same temp assume both below room
two speakers are both emitting sounds the first with an intensitylevel of 1 x 10-6 wm2 and the second with anintensity
a particle of mass m slides down an inclined plane under the influence of gravity a if the motion is resisted by a
a copper wire of radius a 0331 mm has an aluminum jacket of outer radius b 0459 mm there is a currenti 223 a in the
a person notices a mild shock if the current along a path throughthe thumb and index finger exceeds 72microa compare
a 170 km long high-voltage transmissionline 20 cm in diameter carries a steady current of 1040 a if the conductor is
an electron traveling at 812 ms enters a57 t magnetic field the angle betweenthe velocity and the field is 83o find the
a battery with an emf of 15 v and a 12 omega resistorare the only two components in a circuit you measure the current
a block of mass 250 kg is pushed 220 m along a frictionless horizontal table by a constant 160 n force directed 250
coherent light that contains two wavelengths 665 nm red and 575 nm yellow passesthrough two narrow slits separated by
the magnetic flux passing through a single loop in a transformerchanges at a rate of 3 wbs the primarycoil has 90 loops