Answer:
B. Metallic bonds are stronger than hydrogen bonds but weaker than ionic bonds.
Explanation:
a p e x , just took the quiz
Answer:
ya it is , affected!okay I think this
The answer is A.
p=m/v
p= 240/60
p= 4 g/cm^3
<span>A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds. The bond may result from the electrostatic force of attraction between oppositely charged ions as in ionic bonds; or through the sharing of electrons as in covalent bonds.
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A) 50 cm
B) 10000 cm/s
Explanation
Step 1
A)
If you know the distance between nodes and antinodes then use this equation:
![\begin{gathered} \frac{\lambda}{2}=D \\ \text{where}\lambda\text{ is the wavelength} \\ D\text{ is the distance betw}een\text{ nodes} \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20%5Cfrac%7B%5Clambda%7D%7B2%7D%3DD%20%5C%5C%20%5Ctext%7Bwhere%7D%5Clambda%5Ctext%7B%20is%20the%20wavelength%7D%20%5C%5C%20D%5Ctext%7B%20is%20the%20distance%20betw%7Deen%5Ctext%7B%20nodes%7D%20%5Cend%7Bgathered%7D)
then, let
![D=\text{ 25 cm }](https://tex.z-dn.net/?f=D%3D%5Ctext%7B%2025%20cm%20%7D)
now, replace to find the wavelength
![\begin{gathered} \frac{\lambda}{2}=25 \\ \text{Multiply both sides by 2} \\ \frac{\lambda}{2}\cdot2=25\cdot2 \\ \lambda=50\text{ Cm} \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20%5Cfrac%7B%5Clambda%7D%7B2%7D%3D25%20%5C%5C%20%5Ctext%7BMultiply%20both%20sides%20by%202%7D%20%5C%5C%20%5Cfrac%7B%5Clambda%7D%7B2%7D%5Ccdot2%3D25%5Ccdot2%20%5C%5C%20%5Clambda%3D50%5Ctext%7B%20Cm%7D%20%5Cend%7Bgathered%7D)
so, the wavelength is
A) 50 cm
Step 2
The speed of a wave can be found using the equation
![v=\lambda f](https://tex.z-dn.net/?f=v%3D%5Clambda%20f)
or velocity = wavelength x frequency,
then,let
![\begin{gathered} \lambda=50\text{ cm} \\ f=200\text{ Hz} \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20%5Clambda%3D50%5Ctext%7B%20cm%7D%20%5C%5C%20f%3D200%5Ctext%7B%20Hz%7D%20%5Cend%7Bgathered%7D)
replace and evaluate
![\begin{gathered} v=\lambda f \\ v=50\text{ cm }\cdot200\text{ HZ} \\ v=10000\text{ }\frac{\text{cm}}{s} \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20v%3D%5Clambda%20f%20%5C%5C%20v%3D50%5Ctext%7B%20cm%20%7D%5Ccdot200%5Ctext%7B%20HZ%7D%20%5C%5C%20v%3D10000%5Ctext%7B%20%7D%5Cfrac%7B%5Ctext%7Bcm%7D%7D%7Bs%7D%20%5Cend%7Bgathered%7D)
so
B) 10000 cm/s
I hope this helps you