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A microscope has an objective lens with a focal length of 12.0 mm. A small object is placed 0.8 mm beyond the focal point of the objective lens.
(a) At what distance from the objective lens does a real image of the object form?
(b) What is the magnification of the real image?
(c) If an eyepiece with a focal length of 2.5 cm is used, with a final image at infinity, what will be the overall angular magnification of the object?
A skier of mass 100 kg starts from rest and comes down a slope of constant angle 25 degrees with the horizon. What is the length of the slope
Consider the posiblity of making a LED from diamond by constructing a pn junction from a diamond doped with boron and a diamond doped with phosphorus. Estimate the wavelength of the light emitted.
A plane polarized EM wave propagates through a polymer. Such waves obey a similar wave equation to that found for free space. The wave has a magnetic field vector, ??=[(?1.2??)?sin(??y+??t)] ?T, with frequency ??=7.61×10^(14) Hz and wave number ??..
A photon produces a proton-antiproton pair according to the reaction y ---> p+P. What is the minimum possible frequency of the photon
A light-bulb of power 40 Watts is operating with a potential difference of 120 V across it. What is the current and resistance of the filament
A rocket is fired at a speed of 82.0 m/s from ground level, at an angle of 31.0 ° above the horizontal. The rocket is fired toward an 6.95-m high wall, which is located 18.0 m away.
In a purely iductive AC circuit L=25.0mH and the rms voltage is 150V. Calculate the inductive reactance, max and rms current in the circuit
An airplane is flying at an altitude of 2500m above the ground when it sees a stranded on a an island 4000m away. If a pilot lets go of a rescue package and it lands on the island, how fast was the plane traveling? what was the final velocity of the..
A ball is shot from the ground into the air. At a height of 8.6 m, the velocity is observed to be v = (8.1)i + (5.3)j in meters per second (i horizontal, j upward). To what maximum height will the ball rise
At what driving frequency fd do two phasors have the same length? At that driving frequency, what are (c) the phase angle in degrees, (d) the angular speed at which the phasors rotate, and (e) the current amplitude?
A home (volume = 1000 m3) built in 1946 has urea formaldehyde insulation, which outgases into the home at a rate of 5 ng/hr, What is the steady state concentration (C) of formaldehyde in the home
Charge is distributed uniformly throughout the volume of an infinitely long cylinder of radius R = 1.00×10-2 m. The charge density is 1.00×10-1 C/ m3. What is the electric field at r = 5.00×10-3 m? What is the electric field at r = 2.00×10-2 m?
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