You cant skip nothing. All the lessons are important! Sorry about you free time :/
It is a concave lens
Have a nice day
The acceleration of the particle at 3s is [tex]a = 6 \beta [/tex]

<h3>How to calculate acceleration </h3>

if Time is given as 3s
therefore, Acceleration is

Acceleration is

Read more about velocity:
brainly.com/question/19365526
The inert gases do not ordinarily for compound. the halogens are extremely reactive whereas the inert gases tends to be unreactive....hope helps