Which is the correct definition of the focal point of a converging lens or a concave mirror?
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Physics, 14.11.2019 16:31 darlenepitre
Which is the correct definition of the focal point of a converging lens or a concave mirror?
the point at which light from all real objects will be focused.
the point at which light from upright images will be focused into inverted images.
the point at which light from very distant objects will be focused.
the point at which light from virtual images will be focused.
the point at which light from objects within the radius of curvature will be focused.
Answers: 2
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Which statements describe the movement of ocean currents around the globe? check all that apply. strong winds force warm water to sink to the ocean floor. the coriolis effect causes warm and cold water to mix. cool dense water sinks to the ocean floor. warm water replaces cool surface water. wind blowing parallel to the shore causes upwelling of cool water.
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An ideal otto cycle has a compression ratio of 8. at the beginning of the compression process, air is at 95 kpa and 27°c, and 750 kj/kg of heat is transferred to air during the constant-volume heat-addition process. assuming constant specific heats at room temperature, determine (a) the pressure and temperature at the end of the heat-addition process, (b) the net work output, (c) the thermal efficiency, and (d) the mean effective pressure for the cycle. (4390 kpa, 1730 k; 423 kj/kg; 56.4%; 534 kpa)
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Five renewable energy resources are wind, sunlight, moving water and geothermal energy. question 2 options: true false
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