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A step-down transformer is used for recharging the batteries ofportable devices. The turns ratioN2/N1 for a particulartransformer used in a CD player is 9:12. Whenused with 120 V (rms) household service, the transformer draws anrms current of 450 mA. Find the following.a) rms output voltage of the transformerb) power delivered to the CD player.
you are designing an electro microscope capable of resolving two features separated by 1 nm. the f-number fd is 100.
A dinoflagellate takes 5.2 s to travel 0.6 mm. Approximate a dinoflagellate as a sphere of radius 35.0 µm (ignoring the flagellum). What is the drag force on the dinoflagellate in seawater of viscosity 0.0009 Pa · s?
A laser beam shines onto a slit of width 0.1 mm and the diffraction pattern is projected onto a screen 2 m from the slit. what is the wavelength of the laser beam
If the heat engine used to harvest the energy from humans was operating at the theoretical maximum efficiency what temperature would the cold reservoir have to be make this energy source viable? (Assume the hot reservoir is that of the average ski..
The primary coil of a transformer has 100 turns and its secondary coil has 400 turns. If theac voltage applied to the primary coil is 120V
Plane monochromatic waves with wavelength 520 nm are incident normally on a plane transmission grating having 350 slits/mm
Calculate the direction, magnitude and line of action of the vertical and horizontal components of hydrostatic force acting on a surface.
An electron is accelerated from rest through a potential difference that has a magnitude of 2.70 × 107 V. The mass of the electron is 9.11 × 10-31 kg, What is the relativistic kinetic energy (in joules) of the electron
the core of an optical fiber has an index of refraction of 1.29 while the index of refraction of the cladding
Consider a container of 2.0 g of hydrogen, H2 (one mole). What electric force do the protons exert on the electrons after they are separated as described
a dynamite blast at a quarry launches a rock straight upward and 1.7 s later it is rising at a rate of 15 ms. assuming
An interesting (but over simplified) model of an atom pictures anelectron "in orbit" around a proton. Suppose this electron ismoving in a circular orbit of radius 0.21 nm (2.1 x10-10) and the force that makes this circular motion possible is the el..
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