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asteroids have average densities of about 2500 rm kgrm m3 and radii from 470rm km down to less than a kilometrepart
in a photoelectric-effect experiment it is observed that no current flows unless the wavelength is less than 530 nmwhat
if an electron is released from rest in a region of space with nonzero electric field does the electric potential
a two thin slits separated by 00822 mm are illuminated with light from a he-ne laser lambda 633 nm producing
a gamma-ray photon creates an electron-positron pair each with a kinetic energy of 260 kev1 what was the energy of the
a rifle of a mass m is initially at rest but free to recoil it fires a bullet of mass m and velocity v after firing the
in the hydraulic press utilized in a trash compactor the radii of the input piston and the output plunger are 58
a football is kicked straight up into the air it hits the ground 54 s later1 what was the greatest height reached with
discover the minimum aperture diameter of a camera that can resolve detail on the ground the size of a person20 m from
the muons rest mass is 1057 mevc2 and its life-time is 22 x 10-6 s think a beam of muons with a kinetic energy of 800
when striking the pike a predatory fish can accelerate from rest to a speed of 37 ms in 011 show far does the pike move
an unstable high-energy particle enters a detector and leaves a track 109 mm long before it decays its speed relative
a 35kg child is standing on the outer edge of a merry-go-round that has moment of inertia 847 kgm2 and radius 240 m the
a the minute hand on a watch is 20 cm long1 what is the y-component of the displacement vector of the tip of the minute
a hydrogen molecule consists of two hydrogen atoms whose total mass is 53x10-26 kg and whose moment of inertia about an
a soap film n 133 is 273nm thick and lies on a glass plate n 152 sunlight whose wavelengths in vacuum extend from 380
when monochromatic light shines perpendicularly on a soap filmn 133 with air on each side the second smallest nonzero
a projectile is fired straight upward at 141ms how fast is it moving at the instant it reaches the top of its
a 10kg box slides 40 m down the frictionless ramp then collides by a spring whose spring constant is 250 nm 4m is the
if a visible photon with wavelength 434 nm is emitted from an atom in a hydrogen gas lamp what energy state was the
potassium has a work function of 221 ev what is the maximum kinetic energy of electrons escaping from a sample of
a cylindrical disk has volume 89810-3 m3 and mass 798 kg the disk is floating on the surface of some water by its flat
a spacecraft approaching the earth launches an exploration vehicle after the launch an observer on earth sees the
an electron in a multi electron atom has 3 for this electron what are the a smallest possible value of b the smallest
ice of mass 480 g at -98deg c is added to 204 g of water at 151deg c in a 109 g glass container of specific heat