An athlete competing in long jump leaves the ground with a speed of 9.14 m/s at an angle of 35.00 above the horizontal. What is
1 answer:
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The maximum height reached by the ball is 0.46m.
To find the answer, we have to know about the potential energy of a spring mass system.
<h3>How to find the maximum height reached by the ball?</h3>- It is given that,
- We have to find the maximum height reached by the ball.
- Thus, we have the expression for potential energy of a spring mass system and that of gravitational field as,
- Combining both, we get,
Thus, we can conclude that, the maximum height reached by the ball is 0.46m.
Learn more about the potential energy here:
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Answer:
21.2 m
Explanation:
The current in the wire is given by Ohm's law:
where V is the voltage of the battery and R is the resistance of the wire.
The resistance of the wire is directly proportional to the length of the wire, so we can write:
where k is a constant and L is the length of the wire. Substituting into the first equation,
We can rewrite this equation also as
where the term on the left is a constant (because the voltage of the battery does not change). So, we can write:
where:
is the current in the first situation
is the length of the wire in the first situation
is the current in the second situation
is the length of the wire in the second situation
Re-arranging the formula, we can find the value of L2: