<span>Relative
Humidity is a percentage based on how much moisture is in the air
versus how much moisture the air can hold. The dewpoint is the
temperature that the atmosphere must reach for a parcel of air to become
fully saturated. That being said, if the temperature outside is 30
degrees (F or C doesn't matter), and the dewpoint goes from 10 to 20,
then the relative humidity has increased, meaning there is more moisture
present in the atmosphere.
The easiest way to look at pressure is by looking at the number of air
molecules that are in a closed container. Gas molecules expand as they
warm, so warming up a container of air means that these molecule will
attempt to expand, thus increasing the pressure. Take for instance a
soda bottle filled with air, if you heat a soda bottle, then the gases
inside will attempt to expand (raising the pressure) and eventually the
bottle will explode, but if you stick the same soda bottle in dry ice,
the soda bottle will contract, due to decreased pressure. </span>
Source(s):
<span> Military Meteorologist
Bachelors in Natural Science </span>
When a car approaches you, the sound waves that reach you have a shorter wavelength and a higher frequency. You hear a sound with a higher pitch. When the car moves away from you, the sound waves that reach you have a longer wavelength and lower frequency.
?? ⬇️
An approaching source moves closer during period of the sound wave so the effective wavelength is shortened, giving a higher pitch since the velocity of the wave is unchanged. Similarly the pitch of a receding sound source will be lowered.
The Doppler effect is an effect observed in light and sound waves as they move toward or away from an observer. One simple example of the Doppler effect is the sound of an automobile horn. Picture a person standing on a street corner. A car approaches, blowing its horn.
Comparing two waves of the same wavelength, a higher frequency is associated with faster movement. Comparing two waves of different wavelengths, a higher frequency doesn't always indicate faster movement, although it can. Waves of different wavelengths can have the same frequency.
The pitch of a sound is our ear's response to the frequency of sound. Whereas loudness depends on the energy of the wave. ... The pitch of a sound depends on the frequency while loudness of a sound depends on the amplitude of sound waves.
A: Human Body
C is wrong because they don’t have the tools to test it on another planet
Answer:
Explanation:
We first identify the elements of this simple harmonic motion:
The amplitude A is 8.8cm, because it's the maximum distance the mass can go away from the equilibrium point. In meters, it is equivalent to 0.088m.
The angular frequency ω can be calculated with the formula:
Where k is the spring constant and m is the mass of the particle.
Now, since the spring starts stretched at its maximum, the appropriate function to use is the positive cosine in the equation of simple harmonic motion:
Finally, the equation of the motion of the system is:
or
The answer is B! Hope this helps
