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a calculate the orbital radius of an electron in the n99 state of hydrogenb calculate the orbital radius of an electron
a simple pendulum has a length of 85 cm and a bob of mass 12 kg when the string is at 20 degrees to the vertical the
a block of mass 035 kg can slide over a frictionless horizontal surface it is attached to a spring whose stiffness
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a 35 kg particle is projected with an initial speed of 4 ms along a surface for which the coefficient of kinetic
consider the lead isotope 207pb a how many electrons are in a 207pb neutral atom b how many protons are in a 207pb
a 59-kg woman cheats on her diet and eats a 457-calorie 457 kcal jelly doughnut for breakfast a how many joules of
a converging lens with a focal length of 175 cm and a diverging lens are placed 255 cm apart with the converging lens
imagine you are on a cart that rests on a frictionless surface you car 100 kg with 30 basketballs 1 kg each you throw
in a certain automobile engine with an efficiency of 212 combustion of gasoline in one cylinder releases 505 j of heata
a particular motor can provide a maximum of 1100 n bull m of torque assuming that all of this torque is used to
a simple model of the earth includes a dense spherical core of radius 4200 km and a less dense spherical shell of
a 400 kg mass is connected to a spring with a spring constant of 900 nm if the initial velocity is 120 cms and the
a slingshot consists of a light leather cup containing a stone the cup is pulled back against two parallel rubber bands
a two-slit interference pattern is formed using monochromatic laser light that has a wavelength of 640 nm at the first
if i0 is the intensity of the unpolarized light incident on the first polarizer and i1 and i2 denote the intensity of
in one dimension an inertial ball of mass 1 kg has a speed of 150 ms to the right and another inertial ball of mass 3
a pendulum is made with a 4000 kg mass suspended at the end of a thin rod the period of the small motion simple
to build some of the islands in the arabian sea massive boats suck sand from the sea floor and propel it into a massive
a 200 kg mass is connected to a spring with a spring constant of 900 nm the displacement is given by the expression xt
a violin string has a length of 0360 m and is tuned to concert g with fg 392 hz a how far from the end of the string
in the figure the fresh water behind a reservoir dam has depth d 144 m a horizontal pipe 418 cm in diameter passes
a 400 kg mass is connected to a spring with a spring constant of 900 nm if during the oscillation the velocity is 120