I MULTIPLE CHOICE QUESTION
In the "sea of electrons" model of metallic bonding
A .the nuclei are the negatively charged boats floating in a positively charged sea of electrons
B. the nuclei are the positively charged boats floating in a positively charged sea of electrons
. C. the nuclei are the negatively charged boats floating in a negatively charged sea of electrons
D. the nuclei are the positively charged boats floating in a negatively charged sea of electrons

An object moves from the position +34m to the position -15m in 15 seconds. what is it's total displacement? what is it's average velocity?

An object in mechanical equilibrium is an object

Ineed this now one scientist feels that the changes in global climatic patterns may be good for the health of the biosphere. another scientist feels that sharp changes in climatic patterns could result in the extinction of the biosphere. which of these is the most likely reason the two scientists gave conflicting opinions on the impact of changes in the global climatic pattern? they do not have enough knowledge on the topic. they did not discuss the issue among themselves. they believe conflicting opinion strengthens science. they study different areas of science and have different scientific focuses.