Physics, 18.10.2020 15:01 Queenashley3232
An object is placed 60 cm in front of a concave mirror whose focal length is 20 cm. What is
the image position?
a. 20 cm in front of the mirror
b. 30 cm in front of the mirror
c. 60 cm behind the mirror
d. 30 cm behind the mirror
Answers: 1
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Velocity is a description of both speed and direction, therefore it - a vector - a force arrow - the same as acceleration - a magnitude
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Light traveling in a medium with a refractive index 1.19 is incident on a plate of another medium with index of refraction 1.79. at what angle of incidence is the reflected light fully polarized?
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Arigid tank is divided into two equal parts by a partition. one part of the tank contains 3 kg of compressed liquid water at 400 kpa and 60°c while the other part is evacuated. the partition is now removed, and the water expands to fill the entire tank. determine the entropy change of water during this process, if the final pressure in the tank is 40 kpa. use steam tables.
Answers: 3
An object is placed 60 cm in front of a concave mirror whose focal length is 20 cm. What is
the ima...
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