Complete the sentences with the superlative form of the adjectives in parentheses.
Kelly: I think people are too concerned about having (1) ___________________ (modern) cell phones. Cell phones contain some of (2)___________________ (rare) minerals on Earth, but many people just throw their old cell phones away when they buy a new one. This is (3)________________(one of the / bad / thing) you can do! But if you recycle your old cell phones, it’s (4)_________________(one of the / good / thing) you can do.
Answer:
the most modern
the rarest
one of the worst things
one of the best things
Explanation:
The radius of a uranium (U) atom is 156 pm. What is its circumference?
Answer:
Circumference of the uranium atom is 979.68pm
Explanation:
Given
Uranium Atom
Radius (r) = 156 pm
Required
Determine the circumference
This will be calculated using the circumference (C) of a circle
C = 2πr
Take π as 3.14 and substitute 156pm for r in the above formula.
C = 2 * 3.14 * 156pm
C = 979.68pm
Hence, the circumference of the uranium atom is 979.68pm