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3 years ago

write an interface downloadable that has a method "geturl" that returns the url of a downloadable object

Engineering

1 answer:

Scrat [10]3 years ago

3 0

Answer:

I want to believe the program is to be written in java and i hope your question is complete. The code is in the explanation section below

Explanation:

import java.util.Date;

public interface Downloadable {

//abstract methods

public String getUrl();

public Date getLastDownloadDate();

}

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a ball is subject to two forces F1 and F2. The magnitudes of the two forces are 45.0 N and 70.0 N respectively. In the figure be

tino4ka555 [31]

Answer:

F1.x ≈ -28.93
F1.y ≈ 34.47
F2.x = 70
F2.y = 0
(F1+F2).x ≈ 41.07
(F1+F2).y ≈ 34.47
|F1+F2| ≈ 53.62
∠(F1+F2) ≈ 40.0°

Explanation:

A suitable calculator can show you the vector components and their resultant in polar or rectangular format. (See attached.) 2D vectors are conveniently treated as complex numbers, which is why the y-component values are shown as imaginary.

(The 50° angle measured from the -x axis is equivalent to 130° measured from the +x axis, which is the reference we're using here.)

If you'd like to compute the vector components by hand, they are ...

(x, y) = magnitude×(cos(angle), sin(angle))

This notation is sometimes abbreviated <em>magnitude cis angle</em>, a reference to the complex number form x+yi.

8 0

2 years ago

An escalator in a shopping center is designed to move 50 people, 75 kg each, at a constant speed of 0.6 m/s at 450 slope. Determ

REY [17]

Answer:

Power required to drive the escalator shall be equal to the rate at which the energies of the persons is increased.

$Energy=n\times mass\times g\times h\\\\\therefore Power=n\times mass\times g\times \frac{dh}{dt}\\\\Power=50\times 75\times 9.81\times 0.6sin(45)\\\\Power=15.607kW$

As we infer from the above equation If the velocity of the escalator is doubled then the Power required will also be doubled and become 31.215kW

3 0

4 years ago

Sea A una matriz 3x3 con la propiedad de que la transformada lineal x → Ax mapea R³ sobre R³.

skelet666 [1.2K]

Answer:

Explanation:

7 0

3 years ago

A good rule of thumb is to design the horizontal stabilizer so that its area is about 1/6 to 1/8 of the area of the wing. If the

erik [133]

Answer:

Stabilizer with area = 14 cm2

Explanation:

i dont know why but its right

4 0

3 years ago

Danny is looking at deploying a new application that requires root-level access to the server. He is currently researching the c

Advocard [28]

Answer:

Option C (IaaS) will be the correct answer.

Explanation:

IaaS is essentially a cloud strategy that enables an individual or company to rent resources including such servers, networking devices including data or storage management. IaaS is a digital storage facility.
PaaS can not provide root privileges as even the hosting company would control the network. Here, SaaS as well as DBaaS aren't important.

That will be the right answer to the question.

4 0

3 years ago