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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A classic 1957 Chevrolet Corvette of mass 1240 kg starts from rest and speeds up with a constant tangential acceleration of 3.00 m/s2 on a circular test track of radius 60.0 m. treat the car as a particle.
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A unit of area, often used in measuring land areas, is the "hectare", defined as 104 m2. An open-pit coal mine consumes 83 hectares of land, down to a depth of 27 m, each year. What volume of earth, in cubic kilometers, is removed in this time?
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