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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
the drawing shows three identical springs hanging from the ceiling nothing is attached to the first spring whereas a
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
a 750-nc point charge is located 180 m from a 420-nc point charge a find the magnitude of the electric force that one
a particle with a charge of 332 microc moves with a speed of 618 ms in the positive x direction the magnetic field in
a roofer is working on a roof that slants at 390 above the horizontal he accidentally nudges his 890n toolbox causing
when a grating is used with light that has a wavelength of 541 nm a third-order maximum is formed at an angle of 300deg
question 4 for the composite beam of problem 3 check all the statements below that are true answer a at the
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
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
a 10kg baby is perched at the rim of a 40kg disk the disk rotates freely in a horizontal plane at 1 revs the baby
the pilot of an aircraft wishes to fly due west in a 500 kmh wind blowing toward the south the speed of the aircraft
a charged ion has a mass of 25x10-26 kg and charge 125x10-19 c after being accelerated by 250 v it enters a b-field of
although there are a lot of ways to detect planets can someone further expand on the techniques and methods used to
a velocity selector is connected to a mass spectrometer the electric field in the velocity selector is 950 vm calculate
a 200 meter long wire loops carrying a current of 200 a is in the shape of an equilateral triangle if the loop is
a car goes around a curve on a road that is banked at an angle of 307deg even though the road is slick the car will
some bacteria are propelled by biological motors that spin hair-like flagella a typical bacterial motor turning at a
a string of length l which is clamped at both ends and has a tension t is pulled aside a distance h at its center and
calculate the centripetal force exerted on the earth by the sun assume that the period of revolution for the earth is
high voltage power lines are made of aluminum and often start with an electric potential of around half a million volts