Physics, 12.07.2019 22:10 amalalghalib14
Apoint source of light illuminates an aperture 2.2 m away. a 10.5 cm wide bright patch of light appears on a screen 1.0 m behind the aperture. how wide is the aperture? 7.22 cm b) what action(s) would cause a larger patch of light appear on the screen? o moving the light source closer to the aperture o moving the screen closer to the aperture o making the aperture larger c) if you were 2.2 m away from the aperture, what length of the screen (1.0 m on the other side of the aperture) would you see (with one eye)? cm
Answers: 2
Physics, 22.06.2019 03:30
The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.
Answers: 3
Physics, 22.06.2019 11:00
Consider a system to be two train cars traveling toward each other. what is the total momentum of the system before the train cars collide? kg • what must the total momentum of the system be after the train cars collide? kg •
Answers: 2
Physics, 22.06.2019 18:50
Avertical clean glass piezometer tube has an inside diameter of d = 1 mm and is used to measure pressure in a horizontal pipe carrying water as shown. due to pressure in the pipe, the water at 20c rises into the tube to a height h. if the water pressure in the pipe is p = 500 pa gauge, estimate the height h: (a) without considering surface tension (b) with surface tension (capillary) effects. the contact angle can be assumed at 30 deg
Answers: 2
Apoint source of light illuminates an aperture 2.2 m away. a 10.5 cm wide bright patch of light appe...
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