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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
two charges of equal magnitude exert an attractive force of 20times10-4 n on each other if the magnitude of each charge
a cruise ship sails due north at 400 ms while a coast guard patrol boat heads 420deg north of west at 500 ms what are
a when placed in a water of density 997 kgm3 a hollow sphere of inner radius 10cm and outer radius 11cm floats with
explain the experimental evidence and reasoning that led 19th century physicists to conclude that light has wavelike
a double- slit experiment is performed by a coherent single frequencywavelength beam of laser light1 assume that the
with a gauge find the width of one of your fingers also gauge the distance from the tip of your nose to your finger
an upright image is formed with a spherical mirror of focal length of 15 cm the distance between an object and its
dentistsrsquo chairs are examples of hydraulic- lift systems if a chair weighs 1600 n and rests on a piston by a
a 750-kg car moving at 23 ms brakes to a stop the brakes contain about 15 kg of iron which absorbs the energy what is
a 175-g lump of molten lead at its melting point 327degc is dropped into 55 g of water at 200degc1 what is the
a 175-g object is attached to a spring that has a force constant of 765 nm the object is pulled 975 cm to the right of
consider a simple model of the hydrogen atom where one electron is in a stable orbit around one proton at a distance of
two masses ma 4 kg mb 10 kg are connected via a light string around a solid disk frictionless pulley mp 1 kg rp 20