Answer:
the point about which an unconstrained rotation occurs
the mass-weighted center of the object
Explanation:
The center of mass of an object can be described to be a a position that is defined relative to the object
The center of mass is the average position of every parts of the object. At this point we can assume that all of the mass of this object is concentrated
When weighted according to their masses, the center of mass is the average position of all the parts of the object. While other points in this object are rotating around it, the center of mass would not rotate (fixed).
So the correct options are:
1. the point about which an unconstrained rotation occurs
2. the mass-weighted center of the object
The frequency of the electromagnetic wave is 9.55 × 1014 Hz and it is classified as ultraviolet.
<h3>What is meant by electromagnetic waves?</h3>
Electromagnetic waves are forms of energy that are invisible and travel throughout the universe. However, some of the effects of this energy are visible. The light that we see is a component of the electromagnetic spectrum.
Electromagnetic waves, or EM waves, are produced by vibrations between an electric field and a magnetic field. In other words, electromagnetic waves are made up of oscillating magnetic and electric fields.
<h3>How do you calculate the speed of an electromagnetic wave?</h3>
The wavelength and frequency of any periodic wave are used to calculate its speed. v = λf.
In free space, the speed of any electromagnetic wave is equal to the speed of light, c = 3 108 m/s.
The frequency of the electromagnetic wave is 9.55 × 1014 Hz and it is classified as ultraviolet.
To learn more about electromagnetic wave refer to:
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Answer:
Balanced forces do not result in any change in motion. forces: forces applied to an object in opposite directions that are not equal in size. Unbalanced forces result in a change in motion.
Explanation:
According to the research, the correct option is A way of discovering and learning about the world. It is the statement that best explains science.
<h3>What is science?</h3>
It is a set of knowledge that can be organized on a structure and helps us to answer phenomena or questions about the world.
In this sense, this set of organized knowledge is obtained from the observation of natural phenomena and the systematic and reasoned study of nature.
Therefore, we can conclude that according to the research, the correct option is A way of discovering and learning about the world. It is the statement that best explains science.
Learn more about science here: brainly.com/question/6567816
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