The element that has an average amu of 40 is represented by the symbol Zr on the Periodic Table of Elements. True False Question
1 answer:
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Answer:
The angular displacement is
Explanation:
From the question we are told that
The initial angular speed is
The angular acceleration is
The time take is
Generally the angular displacement is mathematically represented as
substituting values
Answer:
Zero
Explanation:
Average velocity is given by:
where
d is the displacement of the trip
t is the time it takes for the trip to complete
In this problem, the net displacement of the swimmer is zero. In fact:
- First, he swims 30.0 m in the north direction
- Then, he travels back (-30.0 m) in the south direction, to the starting position
Since the final position is equal to the starting position, the displacement is zero:
d = 0
And therefore, the average velocity is also zero.