That depends on the air conditions. They can disappear almost immediately or last for seconds, minutes, hours and even days.
The high flying jets left long contrails marking their paths through the sky.
Commonly known as a contrail (condensation trail), the white vaporous trail that is visible coming out of jet aircraft is a result of three concurrent events: 1. Hot jet exhaust cooling as it exits the jet engine. 2. Atmospheric moisture (humidity. 3. Particulate matter as residue from the burning of the jet fuel. As the jet exhaust cools, water molecules condense on the minute particles of carbon in the exhaust forming water droplets and visible vapor, which appears as the white trail behind the jet. The length of the trail generally is determined by the relative amount of atmospheric moisture (humidity) present in the plane's path. The more humidity, the longer the contrail, and conversely, the less humidity, the shorter the contrail. As time passes, the contrail disperses. Wind speed at that altitude can affect how long the contrail is visible. More wind will disperse the contrail more quickly.
It is called a contrail. The 'con' in contrail is derived from condensation, because mostly, airplane vapour or 'smoke' trails are made of water. Concorde's contrail was the purest with something like 99% of it being water at cruising altitude. As the air is accelerated over the wing, the water vapour present in the ambient air can't stay suspended so it condenses, forming a long thin 'cloud'.
contrails are water molecules at high altitude due to condensation.
it bring the rain
A black contrail in the sky can be significant because it may indicate the presence of soot or other pollutants in the atmosphere, which can have negative effects on air quality and the environment.
A contrail is not caused by dumping fuel from a plane before landing, it occurs as a result of a visible condensation of moisture in the wake of an aircraft, missle, or rocket.
Those letters can be used to spell "contrail".
The jetliner's engine/power keeps it on the desired direction of the flight. That engine/power is designed to be stronger than the winds (most of the time :) and thus the jetliner will look unaffected by them. The contrail on the other hand, once released, is free in the air without any inner force to give it a direction. Therefore the contrail will follow the wind's direction as do the clouds in its vicinity.
A contrail or a vapor trail. See the related link for confirmation.
Both are mainly composed of droplets of condensed water.
Depends on the height of the aircraft above ground.