Chemical composition refers to the arrangement, type, and radio of atoms in molecules of chemical substances. Chemical composition varies when chemicals are added or subtracted from a substance, when the radio of substances changes, or when other chemical changes occur in chemicals.
The speed of the wave is C) 8m/s.
<h3>What is speed?</h3>
It should be noted that speed simply means the distance that's covered at a particular time period.
It should be noted that the distance was illustrated as 2m and the frequency is given as 4Hz. Therefore, the speed will be calculated as:
Speed = Frequency × Wavelength
= 2 × 4
= 8m/s
Therefore, the speed is 8m/s.
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Youre basically allowing the gas to have room to roam free in a large container. When you "squeeze" it into a smaller space, there is less room to move and thus the atoms bounce off of each other more often.
When developing a question for a scientific inquiry, the question will ideally D. all of these.
When it comes to a scientific inquiry, it is important that the question identify variables, be measurable, and not just simply ask why. There have to be a couple of variables, you have to be able to measure the results, and to prove them, supported by evidence.
Answer:
The angle of launch is 52.49 Degree.
Explanation:
The Range R and Height H of a thrown object is calculated using the formula,
R=V₀² sin(2φ)/g
H=V₀²sin²(φ)/g
From these equations it can be written,
V₀²=R g/ sin(2φ)
V₀²=H g/ sin²(φ)
These values are equal so it can be written by equating these equations,
R g/sin(2φ)=H g/sin²(φ)
tan(φ)= 2H/R
Given H=72.3 m and R=111 m, the angle of launch is,
tan(φ)= 2*72.3/111
φ= 52.49 Degree.
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