Answer:
Explanation:
The speed of sound in the air increases 0.6 m / s for every 1 ° C increase in temperature. An approximate speed can be calculated using the following empirical formula:
Where:
A more exact equation, usually referred to as adiabatic velocity of sound, is given by the following formula:
Where:
Hence:
Now, the Mach number at which an aircraft is flying can be calculated by:
Where:
Therefore:
Rutherford's model did not completely reimagine Thomson's. Like Thomson, Rutherford still believed that atoms contained negatively charged electrons. Unlike the plum pudding model, where those atoms simply floated in "soup," Rutherford believed they orbited the central nucleus just as planets orbit the sun.
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Answer:
3g/mL
Explanation:
The density of a substance can be calculated using the formula;
Density = mass/volume
Where;
Density = g/mL
mass = grams (g)
volume = (mL)
According to this question, 45.0g of a sample placed in a graduated cylinder causes the water level to rise from
25.0mL to 40.0mL. This means that the volume of the sample is 40mL - 25mL = 15mL
Using D = m/v
D = 45/15
D = 3g/mL
Hence, the density of the sample is 3g/mL
Answer:
This statement is False.
Explanation:
This is because the molecules of gases are randomly traveling and they even sometimes collide with each other. So, it is true that they resist crowding but it is not always possible for the gas molecules to be as far apart as possible because of their random movements. This also makes it impossible for the gas molecules in the tank to be always at the maximum possible distance from its nearest neighbor.
However, the distance between the electrons is not due to random movements like gases. Electrons are placed at the distance from each other due to the forces of repulsion between them, as the same charged particles always repel each other. So, the dispersion of the electron on the copper ball is not due to the random distribution of electrons. However, they will be placed at a distance to each other due to the force of repulsion between them.
I’m so sorry I needed points but I hope you get it right