The equation for wave speed is:

where "v" is wave speed, "λ" is wavelength and "f" is frequency.
Given the wave speed is 343m/s and the wavelength is 0.77955m, we can rewrite the equation as:

Substituting known values, we get:


The pitch that's the closest to this value is
Pitch A.
Out of the choices given, igniting the gas-air mixture supplies the heat for the hot reservoir in a car's engine. The correct answer is C.
Answer:
Explanation:
we humans have our own ify classification for celestial objects, most people are saddened that pluto is not a planet anymore altho it hasn't changed at all.
scientist say that if an object is going to be considered a planet it must fill in these three checkboxes:
You must be spherical, you must orbit a star, and you must have already cleared your path or debris.
Pluto fills in the first two boxes but it does orbit in the keyperbelt and there are 5 other objects just like it. this is why pluto has been dubbed a dwarf planet.