For communication to take place, there has to be:
a. transmission of the message.
b. medium.
c. sharing of meaning.
d. absence of noise

A20 cm long spring is attached to a wall. the spring stretches to a length of 22 cm when you pull on it with a force of 100 n. what is the spring constant

What structural formula represents 4 electrons shared between two atoms?

What is an electric motor? explain its operation. 2-3 sentence