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a lighter-than-air spherical balloon and its load of passengers and ballast are floating stationary above the earth
in a double-slit arrangement the slits are 160 10-5 m apart if light with wavelength 440 nm passes through the slits
an object of mass m1 490 kg is connected by a light cord to an object of mass m2 300 kg on a frictionless surface the
two uniform spheres of mass 75 kg are fixed at 14 cm along the y-axis and 20 cm along the x-axis what is the initial
jupiter has the strongest magnetic field in our solar system about 14 at its poles approximating the field as that of a
a violet bulb uniformly emits monochromatic light of wavelenght 400nm if it emits 1023 photons in a hour and it is 20
a photon having e 257 kev energy scatters from a free electron inside a metal what is the maximum energy the electron
take element z 39 from the periodic table ionize it 38 times so that there is only one electron left orbiting around
incident light of wavelength 400nm elite electrons having a maximum kinetic energy of 10ev from a material a what is
in addition to dark matter cosmologists have proposed dark energy the reason for this was the discovery of a slowing
a solid uniform disk of radius 0250 m and mass 616 kg rolls down a ramp of length 460 m that makes an angle of 16deg
a heat engine operates between a cold reservoir at 10 c and a hot reservoir at 200 c if the engine performs near
physicists first attempted to understand the hydrogen atom by applying the laws of classical physics consider an
balmer discovered the famous formula that bears his name by inspection and trial and error see if you can discover the
a hill sled moves from the top of a hill at 1ms what is the speed of the sled at the bottom of the hill how high is it
a circular saw blade 0210m in diameter starts from rest in 750s it reaches an angular velocity of 160 rads with
an atom is ionized so that it has only one electron when the electron drops from the n 3 shell to the n 1 shell an
in an x-ray scattering measurement the first order diffraction peak is observed at 165deg at what angle is the second
a violin string 125 cm long and fixed at both ends oscillates in its n 5 mode the speed of waves on the string is 268
suppose that you are traveling on board a spacecraft that is moving with respect to the earth at a speed of 0935c you
diagnostic ultrasound of frequency 303 mhz is used to examine tumors in soft tissue a what is the wavelength in air of
the venturi tube shown in the figure below may be used as a fluid flowmeter suppose the device is used at a service
a jet airplane in level flight has a mass of 865 104 kg and the two wings have an estimated total area of 940 m2a what
suppose fuzzy a quantum-mechanical duck lives in a world in which h 2j middot s fuzzy has a mass of 180 kg and is