The doppler radar is used in technology in two ways;
<span>·
</span>Continuous Doppler radar – it has the capability
of receiving signals in means to provide output in velocity from the target
<span>·
</span>It may be use as radar gun in which police use
to detect speeding.
Answer:
b. light from earth is reflected by the moon surface
In a displacement versus time graph, the slope of the line at any point on the graph indicates the <em>magnitude of velocity</em>.
(It can't indicate velocity completely, because the graph shows nothing about the direction of the motion.)
Explanation:
voltage = current × resistance
5.
12 V = 4.2 A × resistance
resistance = 12 V / 4.2 A = 2.857142857... Ohm
FYI :
4.2 A would be a lot for a small electronic device like a CD player. that would be 12×4.2 = 50.4 Watt, and the CD player would get really hot.
6.
120 V = current × 12 Ohm
current = 120 V / 12 Ohm = 10 A
