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a paperweight when weighed in air has a weight of w 419 n when completely immersed in water but it has a weight of win
irreversible less reversiblea no reversible heat engine operates among a high-temperature reservoir at th 810 k and a
1 a stars temperature is 5647 k according to the stefan-boltzmann law how much energy is radiated into space per second
a microwave oven is powered with an electron tube called a magnetron which generates electromagnetic waves of
a long circular pipe with outside radius r carries a uniformly distributed current i 25 a into the page as shown in
in a diffraction experiment light of 600 nm wave length produces a first-order maximum 0350 mm from the central maximum
a straight bimetallic strip consists of a brass strip and a steel strip each 125 cm wide and 305 cm long welded
in solar heating applications heat energy is stored in some medium until it is need eg to heat a home at night should
what voltage vac should an electron be accelerated during if the maximum energy photon it produces is to promote a
a small light source is placed in the very center of the bottom of a bucket of water the light from the source shines
a satellite operates at an altitude of 20200 km and utilizes communication frequencies of157542 mhz discover the
the 30-m-long pipe in the figure is closed at the top end it is slowly pushed straight down into the water until the
a community plans to build a facility to convert solar radiation to electrical power they need 300 mw of power and the
one goal of the russian space program is to illuminate dark northern cities by sunlight reflected to the earth from
a particle undergoes uniform circular motion of radius 283 microm in a uniform magnetic field the magnetic force on the
a community plans to build a facility to convert solar radiation to electrical power they require 300 mw of power and
oxygen for hospital patients is kept in special tanks where the oxygen has a pressure of 700 atmospheres and a
a hollow wire of outer radius 10 cm and inner radius 5 cm carries a uniformly distributed 12 amp current discover the
a jet plane passes over you at a height of 5030 m and a speed of mach 153 a discover the mach cone angleb how long
the identical twins speedo and goslo join a migration from the earth to planet x it is 200 light-years away in a
a particle of mass 982 g and charge 677 muc moves during a uniform magnetic field in a nbspregion where the free-fall
what mass of water at 250deg c added to a styrofoam cup containing two 600-g ice cubes from a freezer at -170deg c will
a spaceship and an asteroid are moving in the similar direction away from earth with speeds of 076c and 040c