<span>New sources of power assist in the development of inventions since t</span>he new inventions would have been worthless without a reliable source of power energy.
Answer:
Maybe
Explanation:
If you are unsure if a website is safe look for signs. If its asking you to allow advertisement then no. I suggest you download a VPN before going to the website just to be safe
Answer:

Explanation:
Considering the number are stored using binary notations.
If there are total 86 bits and 1 bit is used as sign bit. Then in total one can have
bit combinations since a bit can be either stored as 0 or as 1.
Therefore, the largest number that can be stored will be
.
To understand it in better way let's scale down the problem to 3 bits representation. The largest number that can be stored using 3 bits is 111 which in decimal form is 7 and is equal to
.
Answer:
802.11ac
Explanation:
It is a wireless networking standard.It functions only on 5 Ghz only. 802.11ac has three times the bandwidth of 802.11n hence it can handle more number of users.It has multi-link throughput of 1 gigabit per second.It provides high throughput.It is very useful for environments with high user density.