The Millikan oil-drop experim ent, w hich was the first experim ent to measure the charge of the electron, com pared the electrical force on a small charged oil drop with the force exerted on this drop by gravity. T he experim ent thus required a knowledge of the weight of the drop. This weight can be obtained by observing the drop falling with a constant term inal velocity w hen the gravitational force on the drop is balanced b y the frictional force due to the viscosity of the surrounding air. (The air is at atm ospheric pressure so that the mean free path of the air molecules is m uch smaller than the diam eter of the drop.) The term inal velocity with which the oil drop falls is inversely proportional to the viscosity of the air. If the tem perature of the air increases, does the term inal velocity of the drop increase, decrease, or rem ain the sam e?
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Physics, 21.06.2019 19:30
Agymnast dismounts off the uneven bars in a tuck position with a radius of 0.3m (assume she is a solid sphere) and an angular velocity of 2rev/s. during the dismount she stretches out into the straight position, with a length of 1.5m, (assume she is a uniform rod through the center) for her landing. the gymnast has a mass of 50kg. what is her angular velocity in the straight position?
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Physics, 22.06.2019 10:30
Light from a sodium lamp passes through a diffraction grating that has 1000 slits per millimeter. the interference pattern is viewed on a screen 1.000 m behind the grating. the first (m = 1) two bright yellow fringes that are visible are 0.7288 m and 0.7300 m from the central maximum. what are the wavelengths of these two fringes?
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Physics, 22.06.2019 12:40
Find the equation for the plane through upper p 0 left parenthesis negative 4 comma negative 8 comma negative 5 right parenthesis perpendicular to the following line. xequalsnegative 4 minus t, yequalsnegative 8 plus 2 t, zequals3 t, minusinfinityless thantless thaninfinity
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Physics, 22.06.2019 15:00
What happens when a rubber rod is rubbed with a piece of fur?
Answers: 1
The Millikan oil-drop experim ent, w hich was the first experim ent to measure the charge of the ele...
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