Answer:
2.06 N/m
Explanation:
The system makes 10.0 complete oscillations in 17.0 s. So, the frequency of the system is
The angular frequency of the system is given by
In a simple harmonic motion, the angular frequency is related to the mass and the spring constant by
where
k is the spring constant
m is the mass
Here we know
So we can solve the formula to find k:
The equation of the last question which is 3CO2 + 4H2O has a total of 21 atoms with the following number of atoms of each element:
C= 3
C= 3H = 8
C= 3H = 8O = 10.
<h3>What is a chemical formula?</h3>
A chemical formula is defined as the expression that is used to show the chemical symbol of and element in a chemical compound and the number of atoms of those elements.
There are three main type of formula that include the following:
- Empirical formula : This is the type of chemical formula that shows the simplest whole-number ratio of atoms in a compound.
- Molecular formula: This is the type of chemical formula that shows the number of each type of atom in a molecule.
- Structural formula: This is the type of chemical formula that shows how this atoms of each element are bonded together.
The given chemical formula above is a molecular formula that contains the following number of atoms per elements:
C= 3
C= 3H = 8
C= 3H = 8O = 10. Which is a total of 21 ( green)
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Answer:
1.265 Pounds
Explanation:
Data provided:
Tire outside diameter = 49"
Rim diameter = 22"
Tire width = 19"
Now,
1" = 0.0254 m
thus,
Tire outside radius, r₁ = 49"/2 = 24.5" = 24.5 × 0.0254 = 0.6223 m
Rim radius, r₂ = 22" / 2 = 11" = 0.2794 m
Tire width, d = 19" = 0.4826 m
Now,
Volume of the tire = π ( r₁² - r₂² ) × d
on substituting the values, we get
Volume of air in the tire = π ( 0.6223² - 0.2794² ) × 0.4826 = 0.46877 m³
Also,
Density of air = 1.225 kg/m³
thus,
weight of the air in the tire = Density of air × Volume air in the tire
or
weight of the air in the tire = 1.225 × 0.46877 = 0.5742 kg
also,
1 kg = 2.204 pounds
Hence,
0.5742 kg = 0.5742 × 2.204 = 1.265 Pounds
Answer:
Yes
Explanation:
Velocity is a vector quantity, meaning it has size and direction, as opposed to speed, a scalar quantity which only has size.
An example is speed may be 30km/h, and an example of velocity is 30km/h East.
Therefore two people can have the same speed and different velocities because they can be traveling in different directions.
For example, you and your friend could be doing shuttles together but you started at one wall and they started at the other, so even though you are running at the same speed, you always have different velocities because they are running in the opposite direction as you.
Hope this helped!
<span>All atoms of the same element have the same number of protons in the nucleus and consequently have the same atomic number. All atoms of the same neutral element have the same number of electrons as well.</span>
