What career would need to know Greatest Possible Error and why?

Some radar systems detect the size and shape of objects such as aircraft and geological terrain. What is the frequency of such a

vova2212 [387]

Answer:

$f=1.57\times 10^9\ Hz$

Explanation:

Given that,

A system can detect objects as small as 19.1 cm i.e. 0.191 m. It is the wavelength.

We know that,

Frequency, $f=\dfrac{c}{\lambda}$

So,

$f=\dfrac{3\times 10^8}{0.191}\\\\=1.57\times 10^9\ Hz$

So, the frequency of such a system is equal to $1.57\times 10^9\ Hz$ .

4 0

3 years ago

I don’t get this, i’m on a timer so please help

Svetlanka [38]

right angle Answer:

Explanation:

5 0

3 years ago

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A spherically symmetric charge distribution has a charge density given by ρ = a/r , where a is constant. Find the electric field

Airida [17]

Charge dQ on a shell thickness dr is given by

dQ = (charge density) × (surface area) × dr

dQ = ρ(r)4πr²dr

∫ dQ = ∫ (a/r)4πr²dr

∫ dQ = 4πa ∫ rdr

Q(r) = 2πar² - 2πa0²

Q = 2πar² (= total charge bound by a spherical surface of radius r)

Gauss's Law states:

(Flux out of surface) = (charge bound by surface)/ε۪

(Surface area of sphere) × E = Q/ε۪

4πr²E = 2πar²/ε۪

<span>E = a/2ε۪

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!

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3 0

3 years ago

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An 0.80-m aluminum bar is held with its length parallel to the east-west direction and dropped from a bridge. Just before the ba

Dimas [21]

Answer:

a) $B=2.9891\times 10^{-5}\,T$