Physics, 06.12.2019 17:31 keaudresp57ie1
Aphotographer uses his camera, whose lens has a 70 {\rm \; mm} focal length, to focus on an object 5.0 {\rm \; m} away. he then wants to take a picture of an object that is 50 {\rm \; cm} away. part a in which direction must the lens move to focus on this second object? in which direction must the lens move to focus on this second object? toward the film away from the film request answer part b how far must the lens move to focus on this second object? express your answer to two significant figures and include the appropriate units.
Answers: 2
Physics, 22.06.2019 10:30
An insulated 40 ft^3 rigid tank contains air at 50 psia and 120°f. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.
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Physics, 22.06.2019 12:30
Write a full page that sumerizes thermodynamics it’s from the website visionlearnig
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Aphotographer uses his camera, whose lens has a 70 {\rm \; mm} focal length, to focus on an object 5...
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