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Feliz [49]
3 years ago
15

How are electromagnetic waves used in the military?

Physics
1 answer:
sweet [91]3 years ago
7 0
It uses electromagnetic radiation waves to enable military communications, navigation, radar, nonintrusive inspection of aircraft, and other equipment. Hope this helps.
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Un reloj de péndulo de largo L y período T, aumenta su largo en ΔL (ΔL << L). Demuestre que su período aumenta en: ΔT = π
Kruka [31]

Answer:

 ΔT = \pi \ \frac{\Delta L}{\sqrt{Lg} }

Explanation:

In a simple harmonic motion, specifically in the simple pendulum, the angular velocity

          w = \sqrt{\frac{g}{L} }

angular velocity and period are related

          w = 2π / T

we substitute

          2π / T = \sqrt{\frac{g}{L} }

          T = 2\pi  \ \sqrt{\frac{L}{g} }

In this exercise indicate that for a long Lo the period is To, then and increase the long

          L = L₀ + ΔL

we substitute

           T = 2\pi  \ \sqrt{\frac{L + \Delta L}{g} }

            T = 2\pi  \ \sqrt{\frac{L}{g} } \ \sqrt{1+ \frac{\Delta L}{L} }

in general the length increments are small ΔL/L «1, let's use a series expansion

           \sqrt{1+ \ \frac{\Delta L}{L} } = 1 + \frac{1}{2} \frac{\Delta L}{L} + ...  

we keep the linear term, let's substitute

           T = 2\pi  \ \sqrt{\frac{L}{g} } \ ( 1 + \frac{1}{2} \frac{\Delta L}{L}  )  

if we do

           T = T₀ + ΔT

           

           T₀ + ΔT = 2\pi  \sqrt{\frac{\Delta L}{g} }  + \pi  \ \sqrt{\frac{L}{g} } \ \frac{\Delta L}{L}

            T₀ + ΔT = T₀ + \pi  \sqrt{\frac{1}{Lg} } \ \Delta L

            ΔT = \pi \ \frac{\Delta L}{\sqrt{Lg} }

4 0
3 years ago
Does a light switch have electrical potential energy or mechanical energy
nordsb [41]
Turning on a light switch converts mechanical energy to electrical and radiant energy. So Mechanical energy
7 0
4 years ago
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What is the velocity of a car if it travels east 340 meters in 10 seconds? V = d/t
Nadya [2.5K]

Answer:

The awnser is d

Explanation:

i know cause i took the test

6 0
3 years ago
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A capacitor with capacitance (c) = 4.50 μf is connected to a 12.0 v battery. what is the magnitude of the charge on each of the
svet-max [94.6K]

<u>Answer:</u> The charge on each plates is 54\mu C .

<u>Explanation:</u>

The magnitude of charge that flows through the plates is directly dependent on the capacitance and the voltage flowing through the plates.

Mathematically,

Q=CV

where,

Q = charge flowing = ? C

C = capacitance = 4.5\mu F=4.5\times 10^{-6}F    (Conversion Factor: 1\mu F=10^{-6}F)

V = Voltage across the plates = 12 V

Putting values in above equation, we get:

Q=4.5\times 10^{-6}F\times 12V=54\times 10^{-6}C=54\mu C

Hence, the charge on each plates is 54\mu C .

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4 years ago
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What was the main benefit of scientific management? Select one. a. It proved that horizontal and vertical integration were effec
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<span>Frederick Winslow Taylor laid down the fundamentals of the scientific managament. The scientific management methods optimized the way tasks were performed, improved economic efficiency, especially labor productivirty and simplified the jobs. The main benefit of this theory of management was that it encouraged workers to create goods more quickly and efficienty. (D)</span>
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4 years ago
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