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Term specifically describes small chunks of rocks and debris in space that burn up in Earth’s atmosphere is :
Meteors
Explanation:
- A meteor is a meteoroid or a particle broken off an asteroid or comet orbiting the Sun – that burns up as it enters the Earth's atmosphere, creating the effect of a "shooting star".
- Meteoroids that reach the Earth's surface without disintegrating are called meteorites.
- Due to Earth's escape velocity, the minimum impact velocity is 11 km/s with asteroid impacts averaging around 17 km/s on the Earth. The most probable impact angle is 45 degrees.
- Meteoroids have a pretty big size range. They include any space debris bigger than a molecule and smaller than about 330 feet space debris bigger than this is considered an asteroid.
- But most of the debris the Earth comes in contact with is "dust" shed by comets traveling through the solar system.
- The surface of a meteorite is generally very smooth and featureless, but often has shallow depressions and deep cavities resembling clearly visible thumbprints
- Most iron meteorites, like the example at right, have well-developed regmaglypts all over their surface.
Answer:
D. a measure of how fast a machine performs work
Explanation:
Power can be defined as the energy required to do work per unit time.
Mathematically, it is given by the formula;
Hence, the best description of power is that, it is a measure of how fast a machine performs work.
This can be calculated by using the mathematical expression below;
But we know that, 
Answer:
A. optical isolation
Explanation:
well I can't really give a good explanation because I also saw the same question in my exams and option A was the correct answer
Answer:
A Bipolar Junction Transistor, or BJT, is a solid-state device in which the current flow between two terminals (the collector and the emitter) is controlled by the amount of current that flows through a third terminal (the base).
The main basic function of a BJT is to amplify current it will allow BJTs are used as amplifiers or switches to produce wide applicability in electronic equipment include mobile phones, industrial control, television, and radio transmitters. There are two different types of BJTs are available, they are NPN and PNP.
