Ais a rigid layer that surrounds a plant cell, providing structural support. fill in the blank.

Which body part transports oxygen removes waste materials in carries nutrients to the body as part of the circulatory system

Can you match these to the correct definition

The protons in a nucleus are approximately 2 ✕ 10^−15 m apart. consider the case where the protons are a distance d = 1.93 ✕ 10^−15 m apart. calculate the magnitude of the electric force (in n) between two protons at this distance.