Answer:
friction is when two objects tough with force basically. when an object is rubbed against something. when an object comes in contact with something else. or ig u can call it hot air rubbing off the inevitable force lol that works too , bud
whatever helps u rememeber
Stop with that link need to stop
Answer:
sound energy is form of mechanical energy.Sound travels as waves of energy, but, unlike light, the waves transmit energy by changing the motion of particles. ... That means that each individual particle is only moving a short distance.
Main answer: 26.78-kg
Supporting answer: Center of mass
Center of mass of a body is defined as the point at which the whole mass of the body is acting upon. Every body, has its own center of mass. For example, a square has its center of mass at the point where the diagonals of it intersect as well as a circle has its center of mass at the point where it got originated.
All 3-dimensional bodies has 3 axes of rotation. They are x, y and z axes respectively. These axes are used to point the center of mass accurately where it is located.
The co-ordinate in z-axes where the center of mass of a body is found is called as z-coordinate of the mass center(∑).
Now,
We are given with 3 units and its mass. They are:
- Circular disk of 2.5-kg
- Round shaft of 2.5-kg
- Square plate of 3.4-kg
We need to find the z-coordinate of the mass center of these units when present in a 3-dimensional plane.
As the round shaft is placed perpendicular to z plane as it is to hold the square plate we have z value to be 90 for round shaft.
Thus, it can be simplified as:
∑=
Therefore, the value of z-coordinate of mass center is 26.78kg.
You can also refer,
https://brainly.in/question/2750677
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