Answer:
A radar gun is a device for measuring the speed of moving objects. ... The radar gun is a Doppler radar unit that can be static, vehicle-mounted or hand-held. It measures the
Explanation:
Answer:
1st speed 2.velocity 3.speed4.velocity5.velocity6.speed
Answer :
(A) Time period sec
(B) Angle is independent of weight.
Explanation:
Given :
Length of fastened arm m
Length of cable m
(A)
Time of one revolution is
Total radius of circle is m
Total force in horizontal direction X- direction
Since
Total force in Y - direction,
Comparing both equation,
Where
So time period,
s
(B)
Mass is cancelled out, so the angle is independent of weight.
In semiconductors, you can change how easily electrons move through them. That is option 2.
<h3>What are semiconductors?</h3><h3 />
Semiconductors is defined as those substances that possess the characteristics of both metal and non metal.
Examples of semiconductors include the silicon, germanium, and gallium arsenide elements.
The semiconductors are able to conduct electricity through the presence of electrons and holes in them.
The movement of these electrons can be controlled through the addition of impurities to the semiconductor material.
Therefore, in semiconductors, you can change how easily electrons move through them.
Learn more about semiconductors here:
brainly.com/question/1918629