When a base jumper leaps from a tall cliff, the distance she falls (in meters) after t seconds, accounting for air resistance, is gien by d(t)equals=startfraction m over k endfraction ln [hyperbolic cosine (startroot startfraction kg over m endfraction endroot t )]m klncosh kg mt, where m is her mass in kilograms, gequals=9.8 m divided by s squared9.8 m/s2 is the acceleration due to gravity, and k is a physical constant. her velocity t secondst seconds after jumping is v(t)equals=d prime (t )d′(t)equals=startroot startfraction mg over k endfraction endroot hyperbolic tangent (startroot startfraction kg over m endfraction endroot t )mg ktanh kg mt. complete parts (a) through (d) below. a. compute the jumper's terminal velocity, which is defined as modifyingbelow lim with t right arrow infinitylimt→[infinity]v(t).
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Physics, 22.06.2019 01:30
Afigure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 20.9 12000 200 3.33
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Physics, 22.06.2019 03:30
The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current. at night on mars, no light will fall on the solar cells and no electric current will be generated. according to your notes, what type of light is typically needed to cause the photoelectric effect? a)visible b)ultraviolet c)infrared
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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 10:30
The freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude) it is easier for water molecules to escape from liquid into the air. in a high altitude city such as denver, colorado compared to a sea-level city such as houston, texas, water
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When a base jumper leaps from a tall cliff, the distance she falls (in meters) after t seconds, acco...
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