Aperson wheels his wheelchair up a ramp using a force of 93 n. if the ramp has a
mechanical advantage of 7, what is the resistance force?
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Ответ:
Rods
Explanation:
Cones and rods are photoreceptors in the human eyes that helps to aid sight. They get activated by different intensities of light thereby producing pictures that allows us resolves objects.
Rods especially are activated by very bright light as seen during the day. Dim lights activates the cones. The part of the human eye that allows shades of gray of furniture to be seen are the rods. Cones use a lot more light for color visioning whereas rods only need a little.