Answer:
D
Explanation:
cuz it transforms from one to another can't be created not destroyed.PERIOD!
Answer:
750W
Explanation:
40×10= 400N
work done= force × distance
=400 × 75
=30000 J
Power= work done/ time
= 30000 ÷ 40
= 750 W
Radars are frequently used to identify distance and speed, such as how far away an object is or how fast it is moving. <span>The </span>radar<span> device can then use the change in frequency to </span>determine the speed<span> at which the </span>car<span> is moving. In laser-</span>speed<span> guns, waves of light are </span>used<span> in place of radio waves.</span>
Answer:
N = 195 turns
Explanation:
The inductance of the inductor, L = 500 μH = 500 * 10⁻⁶H
The length of the tube, l = 12 cm = 0.12 m
The diameter of the tube, d = 4 cm = 0.04 m
Radius, r = 0.04/2 = 0.02 m
Area of the tube, A = πr² = 0.02²π = 0.0004π m²
![\mu_{0} = 4\pi * 10^{-7}](https://tex.z-dn.net/?f=%5Cmu_%7B0%7D%20%3D%204%5Cpi%20%2A%2010%5E%7B-7%7D)
The inductance of a solenoid is given by:
![L = \frac{\mu_{0}N^{2} A }{l}](https://tex.z-dn.net/?f=L%20%3D%20%5Cfrac%7B%5Cmu_%7B0%7DN%5E%7B2%7D%20A%20%7D%7Bl%7D)
![500 * 10^{-6} = \frac{4\pi *10^{-7} N^{2} *4\pi *10^{-4} }{0.12}\\500 * 10^{-6} = 0.00000001316N^{2} \\N^{2} = \frac{500 * 10^{-6}}{0.00000001316}\\N^{2} = 37995.44\\N = \sqrt{37995.44} \\N = 194.92 turns](https://tex.z-dn.net/?f=500%20%2A%2010%5E%7B-6%7D%20%3D%20%5Cfrac%7B4%5Cpi%20%2A10%5E%7B-7%7D%20%20N%5E%7B2%7D%20%2A4%5Cpi%20%20%2A10%5E%7B-4%7D%20%20%7D%7B0.12%7D%5C%5C500%20%2A%2010%5E%7B-6%7D%20%3D%200.00000001316N%5E%7B2%7D%20%5C%5CN%5E%7B2%7D%20%3D%20%5Cfrac%7B500%20%2A%2010%5E%7B-6%7D%7D%7B0.00000001316%7D%5C%5CN%5E%7B2%7D%20%3D%2037995.44%5C%5CN%20%3D%20%5Csqrt%7B37995.44%7D%20%5C%5CN%20%3D%20194.92%20turns)
Answer;
D. where two plates collide
Explanation;
-Subduction zones are plate tectonic boundaries where two plates converge, and one plate is thrust beneath the other. This process results in geohazards, such as earthquakes and volcanoes.
-Subduction zone volcanism occurs where two plates are converging on one another. One plate containing oceanic lithosphere descends beneath the adjacent plate, thus consuming the oceanic lithosphere into the earth's mantle. This on-going process is called subduction.