The time taken by the runner to do the work is 1.42 seconds.
Given the data in the question;
- Work done;

- Power;

- Time elapsed;

<h3>Power</h3>
Power can be simply referred to as the quantity of energy transferred per unit time.
It is expressed as;

Where W is work done and t is time elapsed.
To determine the time it took the runner to do the work, we substitute our given values into the expression above.

Therefore, the time taken by the runner to do the work is 1.42 seconds.
Learn more about Power and Work: brainly.com/question/2962104
Answer:
2.06 N/m
Explanation:
The system makes 10.0 complete oscillations in 17.0 s. So, the frequency of the system is

The angular frequency of the system is given by

In a simple harmonic motion, the angular frequency is related to the mass and the spring constant by

where
k is the spring constant
m is the mass
Here we know

So we can solve the formula to find k:

Answer:
A. 6.13 x 107
Explanation:
Given the expression
5.92 x 10^7 + 2.11 x 10^6
First, we need to convert to the whole number
5.92 x 10^7 = 59200000
2.11 x 10^6 = 2110000
Add both values
59200000 + 2110000
= 61,310,000
Express in standard form
= 6.13 * 10^7
This gives the required result
Answer:

Explanation:
From the question we are told that:
Mass 
Potential difference 
Magnitude 
Generally the equation for Velocity is mathematically given by




Generally the equation for Force is mathematically given by

Where


Therefore



Free fall condition : acceleration is constant downward and equals to gravitational acc.(g)
because velocity has opposite direction to acceleration, velocity will decrease as it rises.