An electric current flows when electrons move through a conductor, such as a metal wire. The moving electrons can collide with the ions in the metal. This makes it more difficult for the current to flow, and causes resistance.
It will take the object <em>5.306 seconds </em>to come to rest.
<u>Given the following data:</u>
- Initial velocity = 52 m/s
- Acceleration = -9.8
To find how much time it will take the object to come to rest, we would use the first equation of motion;
Mathematically, the first equation of motion is calculated by using the formula;
<em>Time, t </em><em>=</em><em> 5.306 seconds.</em>
Therefore, it will take the object <em>5.306 seconds </em>to come to rest.
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<u>Note</u>: The final velocity (V) of the object would be zero (0) m/s when the object comes to rest.
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Answer:
55,42 J
Explanation:
Since the height of the room is 3.45 m (distance between the floor and the ceiling) the difference between this value and the length of the rope 1.19 m; it will be equal to (3.45-1.19) =2.26 m. If we take as a reference point (Ep=0) the floor of the room, then the potential energy will be equal to Ep = M * g * h, replacing values in this equation (2.5 kg * 9.81 m/s2 * 2.26 m) will be 55,42 (N * m) or Jules.
Answer:
Explanation:
For this case we know that the speed of the sound is given by:
And we have the following info provided:
represent the car leading
represent the car behind with the source
is the frequency for the observer
And we can find the frequency of the source with the following formula:
And replacing we got:
So then the frequency for the source would be the same since the both objects are travelling at the same speed.
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