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drunken musings... if i was sat on the wing of a jet traveling at mach2 would i be able to hear the the noise of the engine behind me?
AlephZero said:You don't have to sit on the wing. The same effect occurred in Concorde when it accelerated through Mach 1 and the engine noise disappeared in the passenger cabin, apart from a small amount of noise transmitted through the structure of the plane itself and not through the air.
Percussim said:The speed of sound is relative to the density of the medium it is traveling in. Thus it is faster in water than in air and faster at ground level than at altitude. Although Mach 2 airflight is commonplace nowadays, no vehicle has achieved Mach 1 at ground level yet. The new land speed record attempt at 1000 miles an hour will seek to achieve that.
PS Global warming isn't a theory; it's a lie!
Percussim said:Please explain difference - speed of sound depends on density of transmitting medium
Percussim said:If the belief that global warming is a lie is banned, it proves that you have no support for its existence - QED
Percussim said:Speed of sound is not relative to the motion of the observer - heard sound is only only relative to your ear - ears do not observe. Would we hear a sound behind us - no - consider the Doppler Effect
the reason global warming is a banned topic is because this IS a scientific site and there is so much opinion and emotion involved whilst so little actual science is provided when people talk about it. moderating the discussion to ensure that it stayed scientific would require an expert (which this forum doesn't have) in the field to devote their time to moderating crackpot loony theories. because we don't have an expert here, the topic is banned in order to make sure that this site doesn't become a pseudo-science mess.Percussim said:OK, I am banned - global warming is an opinion, so ban yourself - this is not a scientific site
The speed of sound is related to the rate of propagation of a wave in the media, and it's also affected by temperature (speed of sound increases if temperature increases and vice versa).Percussim said:The speed of sound is relative to the density of the medium it is traveling in.
Rocket sleds routinely achieve high mach speeds. The Thrust SST was the first "official" human driven vehicle to exceed the speed of sound.No vehicle has achieved Mach 1 at ground level yet.
The speed of sound being relative means that its value is not constant and can vary depending on certain factors, such as temperature and medium.
Yes, the speed of sound can be relative to the observer. For example, if a person is moving towards a sound source, they will perceive the sound to be faster compared to someone who is moving away from the source.
Temperature plays a significant role in the speed of sound. As temperature increases, the molecules in a medium vibrate more, causing sound waves to travel faster. On the other hand, as temperature decreases, the molecules vibrate less, resulting in a slower speed of sound.
Yes, the medium through which sound waves travel can affect their speed. For example, sound travels faster in solids compared to liquids and even slower in gases. This is because the molecules in a solid are closer together, allowing sound waves to travel more quickly.
No, the speed of sound cannot be faster than the speed of light. The speed of light is the fastest speed at which any form of energy can travel, and sound waves do not have enough energy to surpass it. In fact, sound waves travel at a much slower speed compared to light waves.