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Ber [7]
3 years ago
12

Plz help to answer the sheet above thanks

Physics
1 answer:
AysviL [449]3 years ago
6 0

Answer:

(B) sound/kinetic

(E) Gravitational/kinetic

(F) mechanical/sound

Explanation:

(B) the useful energy transfer is sound but a by product of that is kinetic or mechanical energy because of the vibrations needed to make sound

(E) the useful energy transfer is Gravitational potential but a by product of that is kinetic or mechanical energy

(F) the useful energy transfer is kinetic or mechanical energy but the byproduct is noise and occasionally heat

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The cooking time for a roast scales like the 2/3rds power of the mass. Based on scaling laws, how much longer does a 20-lb roast
fgiga [73]

Answer:

2.726472 s more or 1.5874 times more time is taken than 10-lb roast.

Explanation:

Given:

- The cooking time t is related the mass of food m by:

                                    t = m^(2/3)

- Mass of roast 1 m_1 = 20 lb

- Mass of roast 2 m_2 = 10 lb

Find:

how much longer does a 20-lb roast take than a 10-lb roast?

Solution:

- Compute the times for individual roasts using the given relation:

                                  t_1 = (20)^(2/3) = 7.36806 s

                                  t_2 = (10)^(2/3) = 4.641588 s

- Now take a ration of t_1 to t_2, to see how many times more time is taken by massive roast:

                                  t_1 / t_2 = (20 / 10)^(2/3)

- Compute:                t_1 / t_2 = 2^(2/3) = 1.5874 s

- Hence, a 20-lb roast takes 1.5874 times more seconds than 10- lb roast.

                                  t_2 - t_1 = 2.726472 s more

3 0
3 years ago
On the return home, the cyclist accelerates from 2.0 m/s with a an acceleration of 2.2 m/s 2 . Calculate the time it takes the c
jonny [76]

motion

vt=vo+at

10 m/s = 2 m/s + 2.2 m/s².t

8 = 2.2t

\tt t=\dfrac{8}{2.2}=3.63~s

7 0
3 years ago
Kendra is a psychology student. She reads a case study about a man with schizophrenia whose symptoms include laughing for reason
soldier1979 [14.2K]

She presents symptoms of <u>disorganized schizophrenia</u> since her behavior is chaotic and is not organized around themes that are maintained over time.

<h2>What is disorganized schizophrenia?</h2>

Disorganized schizophrenia is the disease expressed through hallucinations and delusions, among the negative symptoms we find cognitive, behavioral and emotional deficits of different types.

<h3>Symptoms of disorganized schizophrenia</h3>

  • The person shows disorganization in his emotional states, in what he says and / or in his way of moving.

  • The person presents language disorganization that affects thinking and cognitive processes.

Therefore, we can conclude that the presence of inappropriate emotional expressions, disorganized language, and motivational deficits are symptoms of disorganized schizophrenia.

Learn more about schizophrenia here: brainly.com/question/15401779

5 0
3 years ago
Show that a light ray that strikes two mutually perpendicular reflecting surfaces is reflected back exactly parallel to the dire
DedPeter [7]

Take a look at the attachment below. As you can see, the figure demonstrates a 90 degree angle such that the surfaces are perpendicular, and hence are independent of the angle of incidence. You could say that this forms a part of a parallelogram -

3 0
3 years ago
A cubical gaussian surface surrounds a long, straight, charged filament that passes perpendicularly through two opposite faces.
laiz [17]

Answer:

The electric flux is zero through four cube surfaces given that a cubical gaussian surface surrounds a long, straight, charged filament that passes perpendicularly through two opposite faces.

Explanation:

Assuming the charged filament is quite long and you are not near the edges, the two opposing sides that the filament travels through have no flux. If the charge filament is long, which you may assume is indefinitely long, then there is the equal amount of charge on the left and right of where you are, therefore the electric field has no preference for left or right. This implies that the electric field can only travel in or out of the filament. No field lines run through the two faces of the cube that the filament goes through if the electric field is not moving left or right. There are electric field lines on the four sides of the filament.

To learn more about cubical gaussian surface and electric flux. Click brainly.com/question/13003911

#SPJ4

7 0
2 years ago
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