3 years ago

What properties of radio waves makes them suitable for sending signals in mountainous regions?

1 answer:

3 0

one of the property of radio waves is that they have long wavelength. due to their long wavelength , they undergo diffraction around the mountains and thus the waves spread around the mountain. this makes them eligible to be used for long distance communication. they can coded and decoded also . that is why they are used in television and radio system

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If a particle's position is given by x=4-12t+3t^2, where t is in seconds and x is in meters, what is its velocity at t=1 second?

andreyandreev [35.5K]

Answer:

v = -6m/s

Explanation:

$x=4-12t+3t^2$

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For t = 1:

$\frac{dx}{dt}=-6$

3 0

3 years ago

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enot [183]

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5 0

3 years ago

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Igoryamba

Answer:

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Explanation:

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2 years ago

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hichkok12 [17]

Answer:

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4 0

3 years ago

This problem uses the same concepts as Multiple-Concept, except that kinetic, rather than static, friction is involved. A crate

Bingel [31]

Answer:

1.96 m/s^2

Explanation:

angle of inclination, θ = 30.6°

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a = 9.8 ( 0.509 - 0.309)

a = 1.96 m/s^2

Thus, the acceleration f the crate is 1.96 m/s^2.

3 0

3 years ago