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an engine running at 625 efficiency transfers 154 j of heat to the cold reservoir through each cycle how much heat does
a uniform meter stick of mass m is pivoted on a hinge at one end and held horizontal with a spring with spring constant
earths perihelion passed about nine hours ago how precisely do we know the moment of closest approach of the earth to
the use of hydrogen fusion to supply energy is a dream that might be realized in the next century this represents a
white light passes from flint glass to air with an incident angle of 317 degrees discover the angle among the colours
a diver 50m deep in 10c fresh water exhales a 12-cm-diameter bubblewhat is the bubbles diameter just as it reaches the
a car traveling 564 kmh is 247 m from a barrier when the driver slams on the brakes the car hits the barrier 211 s
a horizontal laser beam by wavelength 660nm passes through a rectangular glass prism with a vertex angle of 335 degrees
a stone is dropped into a river from a bridge at a height h above the water another stone is thrown vertically down at
what is the significance about the bell shape when its hit at the rim it ringsproduces sound better than other shaped
what are the dissimilar death scenarios for a black hole i know they can evaporate during hawking radiation - but is
as part of a class project you are given 0900 g of copper and asked to fabricate a wire by uniform cross-section you
a parcel of gas expands as it ascends upward away from the ground this process reduces the parcelrsquos internal energy
a proton is initially at rest after some time a uniform electric field is turned on and the proton accelerates the
two large thin metal plates with surface charge densities of opposite signs however equal magnitude of 4427
a uniformly charged straight filament 700 m in length has a total positive charge of 200 c an uncharged cardboard
a laser beam enters a 100 cm thick glass block at an angle of 51deg from the normal the index of refraction of the
a tuning fork with frequency 540 hz is dropped from a building of height 125 m by a musician the musician can hear the
a wheel of radius b is rolling along a muddy road by a speed v particles of mud attached to the wheel are being
the drawing shows two positive charges q1 and q2 fixed to a circle at the center of the circle they produce a net
a small plastic ball of mass 934times10-3 kg and charge 0144c is suspended from an insulating thread and hangs among
three point charges have equal magnitudes two being positive and one negative these charges are fixed to the corners of
an object of mass 12kg is attached to a spring by spring constant 20 nm if the object has a maximum speed of 45ms what
the drawing shows two situations in which charges are placed on the x and y axes they are all located at the same
a metallic sphere has a charge of -94 nc a negatively charged rod has a charge of -52 nc the rod is then placed on the