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A concave mirror (f = 54 cm) produces an image whose distance from the mirror is one-third the object distance. Determine (a) the object distance and (b) the (positive) image distance.
A helicopter lifts a stretcher with a 74 kg accident victim in it out of a canyon by applying a vertical force on the stretcher. what power is deliever by the helicopter
A step-down transformer has 16,000 turns on the primary and 95 turns on the secondary. If the rms emf across the secondary coil is 120 V, Elucidate the maximum emf across the primary coil?
A 4.0-m-long iron bar of uniform cross section is held perpendicular to the wall by a wire from the end of the bar to the wall. what is the magnitude of the horizontal component of force produced by the wall
LC oscillators havebeen used in circuits connected to loudspeakers to create some ofthe sounds of electronic music. which is in the audible range of frequencies
A 0.51 kg mass vibrates according to the equation x = 0.43 cos 8.37t, where x is in meters, and t is in seconds. (a) Determine the amplitude. m (b) Determine the frequency. Hz (c) Determine the total energy. J (d) Determine the kinetic energy and pot..
A diffraction grating has 4272 lines/cm. Calculate the width of the dark area between the first and second order spectra on a screen 3.3 m away
In a college parking lot, the number of ordinary cars is larger than the number of sport utility vehicles by 85.7%, Find the number of SUVs in the lot
a thin metallic spherical shell of radius 40.1 cm has a total charge of 7.65 ?c uniformly distributed on it. at the
A car is accelerating while its horn is blowing. Just after the car passes a stationary person, the person hears a frequency of 978 Hz. 16.0 seconds later, the frequency heard by the person has decreased to 915 Hz.
you push with a horizontal force of 56.0 against a 25.0 box pressing it against a rough wall to hold it in place. the
A spring of spring constant k = 340 Nm-1 is used to launch a 1.5-kg block along a horizontal surface by compressing the spring by a distance of 18 cm. how far does the block slide
A long cylindrical conducting shell has inner radius R1=10 cm and an outer radius R2=12 cm. the conductor has no net charge. At the center of the cylinder, there is a negative line of charge with linear charge density λ=5μc/m.
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