<u>Given data:</u>
wave length (λ) = 22 cm = 0.22 m,
speed of wave length(v) = 4 m/s ,
determine the frequency (f) = ?
We know that ,
wave length and frequency of light are closely related. The higher the frequency, shorter is the wavelength and vice-versa.
Mathematically, <em> λ = v/f -------------------- (i)</em>
<em> </em> where, λ = wave length (m)
v = speed of wave length (m/s)
f = frequency (Hz)
From the equation<em> </em><em>(i) </em>,<em> </em>
<em> </em><em>frequency (f) = v/λ</em>
= 4 / 0.22
= 18.18 /second
frequency (f) of the wave is 18 /sec or (18 Hz)
<em>Note:</em> frequency is defined as "<em>number of occurrences per unit time",</em> measured in<em> Hz</em>.
Explanation:
An atom is made up of three fundamental particles:
- Protons are positively charged particles in an atom
- Electrons are negatively charged.
- Neutrons carry no charges.
In a neutral atom, the number of protons and electrons are the same and equal.
Most atoms are usually depicted this way:
ᵃₙX
where a is the mass number of the atom.
n is the atomic number
X is the symbol of the atom
The mass number is the sum of the number of protons and neutrons
Atomic number is the number of protons.
In a neutral atom, the atomic number is also the number of electrons since the atom is neutral. It has not gained or lost any additional electrons.
Learn more:
Atomic number brainly.com/question/2057656
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Answer:
B, yellow
Explanation:
yellow peas were dominant over the green peas, which were recessive
Answer: 0j
Explanation:
At that point potential energy is zero and kinetic energy is maximum.. P. E=mgh=0
Their average velocity is 0.98 m/s east.
Explanation:
The average velocity of an object is defined as the ratio between the displacement and the time taken:
![v=\frac{displacement}{time}](https://tex.z-dn.net/?f=v%3D%5Cfrac%7Bdisplacement%7D%7Btime%7D)
The displacement is a vector connecting the initial point to the final point of motion: so, being displacement a vector, velocity is a vector as well, having the same direction of displacement.
Here, Heather and Matt walk 2.0 km eastward, so their displacement is
d = 2.0 km = 2000 m (east)
While the time they took is
![t=34 min \cdot 60 = 2040 s](https://tex.z-dn.net/?f=t%3D34%20min%20%5Ccdot%2060%20%3D%202040%20s)
Therefore, their average velocity is
![v=\frac{2000}{2040}=0.98 m/s](https://tex.z-dn.net/?f=v%3D%5Cfrac%7B2000%7D%7B2040%7D%3D0.98%20m%2Fs)
And the direction is the same as the displacement (east).
Learn more about average velocity:
brainly.com/question/5248528
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