Explain why when someone uses his thumb to push a pin into a block of wood the pressure on the wood is greater than the pressure on this thumb

Which type of microscope would allow the viewer to see ribosomes inside a cell?

What properties of a moving object are used in determining the object's energy of motion

If the radius of curvature of the cornea is 0.75 cm when the eye is focusing on an object 36.0 cm from the cornea vertex and the indexes of refraction are as described before, what is the distance from the cornea vertex to the retina? express your answer to two significant