Answer:
4.9
Explanation:
Velocity half second before maximum height = Velocity half second after maximum height (Return journey)
For downward journey :
Initial velocity u=0 m/s
We have g=9.8 m/s
Time t= ½s
s
Thus velocity after half second v=u+gt
v=0+9.8× ½ =4.9m/s
The study of the atom contributed to our understanding of the periodic table of the elements in the following way: experiments that identified characteristics of atoms provided scientists with atomic weights and atomic numbers, which were used to organize the periodic table.
<h3>PERIODIC TABLE:</h3>
The periodic table is an organized table of the chemical elements arranged in order of their atomic number
The periodic table consists of rows called periods and columns called groups. Each element in the periodic table is made up of its own individual atom.
Hence, the experiments conducted on these atoms provided the atomic numbers and masses used as a template to organize each element in the periodic table.
Learn more about atoms at: brainly.com/question/13981855
To solve this problem it is necessary to apply the concepts related to pressure as a unit that measures the force applied in a specific area as well as pressure as a measurement of the density of the liquid to which it is subjected, its depth and the respective gravity.
The two definitions of pressure can be enclosed under the following equations
Where
F= Force
A = Area
Where,
Density
g = Gravity
h = Height
Our values are given as,
If we make a comparison between the lid and the tube, the diameter of the tube becomes negligible.
Matching the two previous expressions we have to
Re-arrange to find h
Therefore the height of water in the tube is 7.9cm
Answer:
Sand!
Explanation:
Water has very high specific heat, which means that it needs to absorb quite a bit of energy before its temperature starts to change. Sand has a much lower specific heat, so it needs to absorb less energy.
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