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Vsevolod [243]
3 years ago
12

Radar devices are used by law enforcement to be sure that individuals are driving safely. They tell the officer how fast the veh

icle is traveling at that specific moment in time. The radar device determines the vehicle's
A. instantaneous speed.
B. acceleration.
C. maximum velocity.
D. average speed.
Computers and Technology
1 answer:
lara31 [8.8K]3 years ago
5 0
A.


Since they say "specific moment in time" that tells you that it was measured at that instant, therefore, instantaneous speed is your answer.
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The equation of certain traveling waves is y(x.t) = 0.0450 sin(25.12x - 37.68t-0.523) where x and y are in
NNADVOKAT [17]

Answer:

A. 0.0450

B. 4

C. 0.25

D. 37.68

E. 6Hz

F. -0.523

G. 1.5m/s

H. vy = ∂y/∂t = 0.045(-37.68) cos (25.12x - 37.68t - 0.523)

I. -1.67m/s.

Explanation:

Given the equation:

y(x,t) = 0.0450 sin(25.12x - 37.68t-0.523)

Standard wave equation:

y(x, t)=Asin(kx−ωt+ϕ)

a.) Amplitude = 0.0450

b.) Wave number = 1/ λ

λ=2π/k

From the equation k = 25.12

Wavelength(λ ) = 2π/25.12 = 0.25

Wave number (1/0.25) = 4

c.) Wavelength(λ ) = 2π/25.12 = 0.25

d.) Angular frequency(ω)

ωt = 37.68t

ω = 37.68

E.) Frequency (f)

ω = 2πf

f = ω/2π

f = 37.68/6.28

f = 6Hz

f.) Phase angle(ϕ) = -0.523

g.) Wave propagation speed :

ω/k=37.68/25.12=1.5m/s

h.) vy = ∂y/∂t = 0.045(-37.68) cos (25.12x - 37.68t - 0.523)

(i) vy(3.5m, 21s) = 0.045(-37.68) cos (25.12*3.5-37.68*21-0.523) = -1.67m/s.

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3 years ago
The acronym LAH stands for
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EASY AND I GIVE BRAINLIEST!!! What is a good jeopardy question about operating systems?
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 ______ is used in operating system to separate mechanism from policy
<span><span>A. Single level implementation</span><span>B. Two level implementation</span><span>C. Multi level implementation</span><span>D. None</span></span>
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3 years ago
In linux, a(n) ____ is a data structure that stores all information (such as file permissions, ownership, and file type) about a
Galina-37 [17]
Hi,


Answer => <span>Inode


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4 0
3 years ago
What are the differences and similarities of computer virus and biological virus. Give 4 examples
Papessa [141]

Answer:

During recent months, we’ve witnessed an unexpected and distressing pandemic of a coronavirus disease. What I find especially distressing about it is how the worldwide adversity was caused by just a tiny thing — namely, a virus called SARS-CoV-2.

However, biological viruses have always been a potent threat to humanity, as historic pandemics have proved. No wonder viruses became an ideal weapon model in a totally different world — a world of programming. The first computer viruses were created as early as in the 1970s. Starting as pranks, they evolved to become a major threat to the stability of computer networks worldwide. And the more I think of viruses, both biological and digital, the more amazed I am by their similarities.

We don’t know what kind of challenges viruses of either type will cause in the future, but understanding how they infect, the symptoms they induce, how they spread, and the damage they can cause can help us fight both.

The Common Thread

Let’s start with the basics: What does a virus look like?

computer virus of 1999

Click image for larger version

Figure 1: Pictured on the left is an electron microscope image of SARS-CoV-2 particles - the pandemic-causing coronavirus. Source: NIAID-RML. Pictured on the right is a code snippet of a Melissa, the notorious email-spreading computer virus of 1999. Source: Gizmodo.

The images in Figure 1 might look vastly different, but, essentially, they’re the same: a string of code. In the coronavirus, it’s the RNA genome in a shell; in Melissa, it’s computer code. In both cases, the code is an “instruction” for the virus to follow.

Explanation:

here is your answer hope you will enjoy

thank you

6 0
2 years ago
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