It is a very reactive metal with 11 protons ,12 neutrons, 11 electrons, and 1 valence electron
Answer:
Explanation:
Machines simply make work easier to do. They increase the amount of force exerted on a body and also the distance through which the force is applied. Also, they can also change the direction through which force on them is applied in order to produce much more work.
Work done = force x distance
The input force in a machine is attenuated to yield even more force. This is the purpose of designing a simple machine. When the force increases, more work would be produce with our little effort applied on the body.
Work done is a function of the force applied on a body and the distance through which it moves.
No sea breeze can not occur at night because while sea breezes occur during the day, land breezes occur at night. Despite the difference in times at which the land breezes and sea breezes occur, the reason for the land breeze's formation is basically the same as the sea breeze, but the role of the ocean and land is reversed.
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The altitude or height of the pole vaulter as she crosses the bar is 4.04 m.
<h3>What is the height of the pole vaulter?</h3>
The height of the pole vaulter is determined from the change in kinetic energy which is equal to the potential energy at that height.
- Potential energy = Change in kinetic energy
h = (v - u)²/2g
h = (10 - 1.1)²/2 * 9.8
h = 4.04 m.
In conclusion, the height is determined from the potential energy at that height.
Learn more about potential energy at: brainly.com/question/14427111
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