Answer:
The frequency and the wavelength
Explanation:
A wave is a periodic disturbance of the space that carries energy without carrying matter.
The displacement of a wave is described by a sine/cosine function.
Moreover, there exist two types of waves:
- Mechanical waves: they are produced by the oscillations of the particles in a medium - they can only propagate through a medium (not through a vacuum)
- Electromagnetic waves: they consist of the oscillations of the electric and magnetic fields - these are the only waves able to propagate through a vacuum
The speed of a wave is given by:
where:
is the frequency of the wave, which is the number of oscillations completed by the wave per second
is the wavelength of the wave, which is the distance between two consecutive crests (point of maximum amplitude) of the wave
Therefore, if we know wavelength and frequency of a wave, we can calculate its speed.
The correct option is (A) <span>the first law of thermodynamics
Explanation:
The first law of thermodynamics takes the idea of law of conservation of energy and modify it for thermodynamics systems. It is the total internal energy of the systems equals to the amount of heat added "to" the system and the workdone "by" the system given as:
</span>ΔU = Q - W
<span>Q = heat added TO the system
W = work BY the system
</span>ΔU = Total internal energy
<span>
But the total internal energy is CONSERVED; it means that energy cannot be created or destroyed; it can only be transformed from one form to another. Hence the correct option is (A).</span>
A 3rd harmonic of a tube open at both ends will have displacement antinodes at both ends.
In a tube of length L with two open ends, the longest standing wave has displacement antinodes (pressure nodes) at both ends. The fundamental or first harmonic is what it is known as. The second harmonic is the longest standing wave in a tube of length L with two open ends.
Learn more about harmonics here brainly.com/question/17315536
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The 50 W bulb would have a greater current than the 90 W bulb