Answer:
Average speed of the swimmer is 4.44 m/s
Explanation:
As we know that the speed is the ratio of distance covered over time interval
so here we can say

so we know that

time taken to complete the trip is

now we have


Answer: A raindrop
Explanation:
It would be a raindrop depending on if the ship is moving or not. If the ship is not moving, then the raindrop would have more momentum. But, if the ship were moving, then it would have more momentum. Because momentum equals mass times velocity.
Answer:
True
Explanation: A professional assessment is the only way to determine the health related fitness. These could include blood work, breathing exercises, ect to make sure the person is able to perform the fitness exercises without compromising their health.
The forces a piano tuner applies to stretch the steel piano wire willl be 1.4 × 10¹¹ N.
<h3>What is force?</h3>
Force is defined as the push or pulls applied to the body. Sometimes it is used to change the shape, size, and direction of the body. Force is defined as the product of mass and acceleration. Its unit is Newton.
The application of a force may be used to describe the steel as an elastic element within a certain range of applied force.
Given data;
Young modulus, E=2.10 × 10¹¹ N/m²
Cross-sectional area,A
Final length,
Initial length,

Hence, the force a piano tuner applies to stretch the steel piano wire willl be 1.4 × 10¹¹ N.
To learn more about the force refer to the link;
brainly.com/question/26115859
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