This is false. Sound travels faster through steel. That is why you can see people in movies putting their ear on the railroads to see whether a train is coming. That is because they can't hear it through air, but the sound travels through the steel.
Answer:
W 1920 N
Explanation:
200kg at a location where g=9.6m/s^2
<h2>
Answer: This is false</h2>
Explanation:
This sentence is the description of a specific type of energy: the mechanical energy.
To unerstand it better:
The mechanical energy of a body, a system or a substance is that which is obtained from the speed of its movement (kinetic energy) or its specific position (potential energy), in order to produce a <u>mechanical work. </u>This means mechanical energy involves both the kinetic energy and the potential energy (which can be elastic or gravitational, for example).
In addition, it should be noted that <u>mechanical energy is conserved in conservative fields and is a scalar magnitude.
</u>
Therefore:
The sum of potential and kinetic energies in the particles of a substance is called <em><u>Mechanical Energy</u></em>
Answer:
1. Speed
Explanation:
"how far an object moves in a certain amount of time"
"how far an object moves"- <em>distance</em>
"In a " - <em>over</em>
"certain amount of time" - <em>time</em>
<em>Distance over time is speed. </em>
The speed of an object is the distance the object travels in one unit of time.
<em>Hope I Helped, Feel free to ask any questions to clarify :)</em>
<em>Have great day!</em>
<em> -Aadi x</em>
