Answer:
If the radio wave is on an FM station, these are in Megahertz. A megahertz is one ... Typical radio wave frequencies are about 88~108 MHz .
Explanation:
To calculate the wavelength of a radio wave, you will be using the equation: Speed of a wave = wavelength X frequency.
Since radio waves are electromagnetic waves and travel at 2.997 X
10
8
meters/second, then you will need to know the frequency of the radio wave.
If the radio wave is on an FM station, these are in Megahertz. A megahertz is one million hertz. If the radio wave is from an AM radio station, these are in kilohertz (there are one thousand hertz in a kilohertz). Hertz are waves/second. Hertz is usually the label for the frequency of electromagnetic waves.
To conclude, to determine the wavelength of a radio wave, you take the speed and divide it by the frequency.
Typical radio wave frequencies are about
88
~
108
MHz
. The wavelength is thus typically about
3.41
×
10
9
~
2.78
×
10
9
nm
.
Dalton's atomic<span> theory proposed that all matter was composed of </span>atoms<span>, indivisible and indestructible building blocks. While all </span>atoms<span> of an element were identical, different elements had </span>atoms<span> of differing size and mass</span>
Answer:
i know it i know it pick me
Explanation:
The is organic compound with the correct chemical formula C4H9O2.
<h3>What is a model?</h3>
A model is a representation of reality. A model serves the purpose of prediction as well as explanation.
Looking at the model of the molecule we can see that it is the organic compound with the correct chemical formula C4H9O2. The molecule is shown in the image attached to this answer.
Missing parts:
There are several ways to model a compound. One type of model is shown.
What is the chemical formula for the molecule represented by the model?
CHO
C4H9O2
C4H8O
C3H8O2
Learn more about molecular models:brainly.com/question/156574?
#SPJ1
Answer:
E. All of the above.
Explanation:
These are the equations for potential (PE) and kinetic energy (KE):
PE = m · g · h
Where:
m = mass of the object.
g = acceleration due to gravity.
h = height.
KE = 1/2 · m · v²
Where:
m = mass.
v = speed.
At the end points of its swings, the pendulum is at its maximum height and its velocity is zero (for an instant). Then all the energy at these points is potential (answer B).
As the pendulum swings back from the end point it starts to lose height and acquires kinetic energy until it reaches the lowest part of the of its swing. At this point, all the potential energy was transformed into kinetic energy. The potential energy will be zero (because the height is zero) and due to energy conservation, the energy that once was potential energy has to be transformed into some kind of energy, in this case, into kinetic energy (we assume there is no air resistance, in which case some energy would be transformed into thermal energy as well, i.e., heat). (answer A and D).
After the lowest point, the pendulum acquires height (potential energy increases) and, due to the acceleration of gravity, it starts to lose velocity (kinetic energy decreases). Due to conservation of energy, the increase in potential energy must be equal to the decrease in kinetic energy. The kinetic energy is transformed into potential energy (answer C).
Then, the answer is E. All answers are correct.
