Letter B
without a medium, there is nothing to compress, hence, no wave. A fast- medium like a gas (air) is easy to compress and allows waves to move through it easily. a slow medium, like a liquid, is still pretty fast, but not as fast as air.
Answer:
To summarize, an object moving in uniform circular motion is moving around the perimeter of the circle with a constant speed. While the speed of the object is...
A recreational flyer does not need an airspace authorization in uncontrolled airspace.
An airspace in which the Air Traffic Control service is not considered necessary is called uncontrolled airspace.
In general, an uncontrolled airspace remains at 400 or under 400 levels surpassing the ground.
Moreover, in an uncontrolled airspace the recreational flyer does not need any prior authorization and should also have particular knowledge about the airport traffic patterns
To put it simply, the remote pilots and flyers are not allowed to use landing and take off areas in an uncontrolled airspace.
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Answer:
B
Explanation:
the river is caused by weathering and erosion is the breaking down of rocks
Answer:
It is important to have a range of tools that can measure all parts of the electromagnetic spectrum because electromagnetic spectrum have different radiations such as infrared, visible light, ultraviolet, radio waves, microwaves, X-rays and gamma rays. Each of these radiation requires different instrument for their measurement. So that's why a range of tools are needed to measure electromagnetic spectrum.