Astronomical telescope having a objective lens
An astronomical telescope has an objective lens with a focal length of 102 cm and an eyepiece with a focal length of 18cm. When used to view and object that is far far away, such as a star, what is its angular magnification?
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Your car has a rear view mirror that is convex with a radius of curvature of 5 m. A car is approaching you from the rear. Calculate the demagnification of the image of the approaching car as seen by you when it is 45 m behind the mirror.
An 87-O resistor and a 64-O resistor are connected in series across a battery. The voltage across the 87-O resistor is 19 V. What is the voltage across the 64-O resistor?
Find the magnification for the object at distance 34.8 cm. Find the magnification for the object at distance 17.4 cm. Find the magnification for the object at distance 8.7 cm.
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An isolated conductor of arbitrary shape has a net charge of +15 x 10- 6 C. Inside the conductor is a cavity within which is a point charge q = +3.5 x 10-6 C. In Coulombs, what is the charge (a) on the cavity wall and (b) on the outer surface of t
Compute the temperature of the reservoirs between which the engine operates. (Assume n = 1 kilomole)
When a current of I = 22 A exists in the wire, the wire swings upward and, at equilibrium, makes an angle with respect to the vertical, as the drawing shows. Find (a) the angle and (b) the tension in each of the two strings.
A singly ionized helium atom (He+) has only one electron in orbit about the nuclues. What is the radius of the ion when it is in the excited state defined by n=3?
If an electron is traveling at a constant speed and enters the electric field between two charged plates of different voltage, what is the shape of the trajectory it makes while in between the two plates?
A nearsighted patient's far point is 0.612 m from her eyes. She is able to see distant objects in focus when wearing glasses with a refractive power of -1.7 diopters. What is the distance between her eyes and the glasses?
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