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a stamp collector is viewing a stamp with a magnifying glass held next to her eye her near point is 25 cm from her eyea
olaf is standing on a sheet of ice that covers the football stadium parking lot in buffalo new york there is negligible
to throw the discus the thrower holds it with a fully outstretched arm starting from rest he begins to turn with a
the yellow light from a helium discharge tube has a wavelength of 5875 nm when this light illuminates a certain
an electron with velocity v 300 200 0 ms moves in a region where the magnetic feild is b 0 12 28 x 10-4 t determine
the figure shows the blade of a chain saw the rotating sprocket tip at the end of the guide bar has a radius of 00343 m
an open train car with a mass of 2210 kg coasts along a horizontal track at the speed 247 ms the car passes under a
at a stop light a truck of mass mt 110 x 104 kg fails to hit its brakes until it has hit a car of massmc 160 x 103 kg
a 97 g object moving to the right at 11cms makes an elastic head-on collision with a 14 gram object moving in the
a large storage tank is filled to a height 81 cm the tank is punctured with a small hole at a heiht of 38 cm from the
an l-r-c circuit has an inductance of 0410 a capacitance of 275times105 and a resistance of r1what is the angular
high voltage power lines are made of aluminum and often start with an electric potential of around half a million volts
a refracting telescope has an objective and an eyepiece that have refractive powers of 125 diopters and 300 diopters
the maximum angular magnification of a magnifying glass is 120 when a person uses it who has a near point that is 250
monochromatic light shines on a diffraction grating when the light source and the grating are in air the first-order
a four-turn rectangular coil has a spatially varying magnetic field directed through its center as shown the magnetic
a man is trying to get his car out of mud on the shoulder of a road he ties one end of a rope tightly around the front
in very cold weather a significant mechanism for heat loss by the human body is energy expended in warming the air
a swimmer looks upward from the bottom of a 30-m-deep swimming pool the end of the diving board is directly above him
a 200 meter long wire loops carrying a current of 200 a is in the shape of an equilateral triangle if the loop is
some bacteria are propelled by biological motors that spin hair-like flagella a typical bacterial motor turning at a
a force is given by fx5x3 in the x-direction acts on a 1kg mass moving on a frictionless surface the mass moves from
the angle of incidence at a solidliquid boundary is 759deg and the index of refraction of the solid is n 150a what
a 019 kg meterstick has a 017 kg mass at its 40 cm mark and a 045 kg mass at the 85 cm mark where should the fulcrum be
a diverging lens f -120 cm is located 240 cm to the left of a converging lens f 320 cm a 330-cm-tall object stands to