Which is the BEST description of how eyeglasses work?
A.
The lenses replace the lenses in your eyes to focus light on your retinas.

B.
The lenses replace the retinas in your eyes to focus light on your lenses.

C.
The lenses work with the lenses in your eyes to focus light on your retinas.

D.
The lenses work with the retinas in your eyes to focus light on your lenses.

Mike walks 100 meter north, then walks 30 meters south. after this, he walks another 10 meters north. what is the magnitude of his total displacement during this walk,in meters?

What is the role of the ocular lens?

Acarpenter builds an exterior house wall with a layer of wood 2.9 cm thick on the outside and a layer of styrofoam insulation 2.3 cm thick on the inside wall surface. the wood has k=0.080w/(m⋅k), and the styrofoam has k= 0.010 w/(m⋅k). the interior surface temperature is 19.0 ∘c , and the exterior surface temperature is -15.0 ∘c . a.)what is the temperature at the plane where the wood meets the styrofoam? celsius b.)what is the rate of heat flow per square meter through this wall? /m^2