Answer:
matter
Explanation:
mayter is any thing that hase mass and volune
Answer:
increased by 9 times
Explanation:
As the period of a simple pendulum is defined as the following formula

where L is the length of the pendulum and g is the constant gravitational acceleration. Since L is under a square root, if you want to triple the period of vibration, L must be increased by 9 times so that 
The last row also know as noble gasses row also know as 18 row also know as 8A
Answer:
True
Explanation:
Because AxB=lAllBlsin(x)
and x is the angle between them
so, the angle is 180° and sin180 is zero.