Speed = 11000 m/s = 11km/s
D = 380000 km,
t = D/s = 380000 km/ 11km/s
t = 34 545.45 seconds.
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Answer:
When a sound source moves faster than the speed of sound, a shock wave is produced as the sound waves interfere. A sonic boom is the intense sound that occurs as the shock wave moves along the ground.
More importantly, all of the energy gets concentrated into a very small distance this is called a shock wave. In this case, the observer does not hear the approaching source at all until the shock wave hits with all of the energy in the wave. For sound waves, this can cause a very loud noise, called a sonic boom.
Sonic booms produced by aircraft flying supersonic at altitudes of less than 100 feet, creating between 20 and 144 pounds overpressure, have been experienced by humans without injury. Damage to eardrums can be expected when overpres- sures reach 720 pounds
Explanation:
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Answer:
Assume I1 = Io * T1 transmission proportional to thickness
I2 = Io * T2 I is intensity of light absorbed (3/8 absorbed)
I1 / I2 = T1 / T2
T2 = T1 * (I2 / I1) = 2 * (2/3 / 3/8) = 2 * 16/9 = 32/9 thickness for 2/3 absorbed
According to the research, the correct option is true. Applying an electric current to the x-ray tube causes electrons to be boiled off the filament, producing x-rays.
<h3>What is the x-ray tube?</h3>
This is the part of the equipment that generates the X-rays, which consists of the electrons being accelerated to energies of 30 to 150 keV and hitting a tungsten target producing X-rays.
Specifically, it contains the cathode and the anode, which is covered by a protective and insulating casing, where the electrons emitted by a filament in the cathode reach the anode strongly accelerated, generating X-ray emission as a consequence, being the basis of all devices using ionizing radiation.
Therefore, we can conclude that according to the research, the correct option is true. Applying an electric current to the x-ray tube causes electrons to be boiled off the filament, producing x-rays.
Learn more about x-ray tube here: brainly.com/question/15274343
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