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Svetlanka [38]
3 years ago
13

Three students attempt to define what it means for lines lll and mmm to be perpendicular. Can you match the teacher's comments t

o the definitions? Definition of perpendicular lines Teacher's comments

Physics
1 answer:
Ber [7]3 years ago
3 0

Incompletevquestion. However, I inferred from a general perspective about perpendicular lines.

<u>Explanation:</u>

Put simply, <u>perpendicular lines</u> are lines that are at right angles (90°) to each other. Thus, we could say based on this definition that for lines lll and mmm to be perpendicular they intersect and be at right angles (90°) to each other as <u>found on the attached image.</u>

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What is the difference in light that is refracted compared to light that is reflected? Think in terms of speed of light as well
Ber [7]

Answer:

The refracted light wave is bent at an angle while the reflected light wave is bounced back either at 90° or at angle less than 180°.

The refracted light wave changes its speed when it moves from one medium to another based on the density of the medium.

The reflected light does not change its speed once it contacts another medium. It just bounces back with the same speed.

Explanation:

4 0
3 years ago
Si se aumenta la tencion en una cuerda,¿ que pasa con la velocidad de la onda?​
Veronika [31]

Answer:

El aumento de tensión alarga la longitud de onda, reduce la amplitud, aumenta la frecuencia y, por lo tanto, aumenta la velocidad. (GOOGLE)

3 0
3 years ago
There is no law of conservation​
ruslelena [56]

Answer:

yes

Explanation:

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3 0
3 years ago
A car moving at 10.0 m/s encounters a bump that has a circular cross-section with a radius of 30.0 m. What is the normal force e
Andrew [12]

Answer:

force at the top will be 388 N which is nearly equal to 389

option (b) is correct

Explanation:

We have given velocity of the moving car v = 10 m/sec

Radius of the circular section r = 30 m

Mass of the passenger m = 60 kg

Acceleration due to gravity g=9.8m/sec^2

At the top normal force is given by noraml\ force=mg-\frac{mv^2}{r}

So force at top will be F=60\times 9.8-\frac{60\times 10^2}{30}=388N

So force at the top will be 388 N which is nearly equal to 389

So option (b) is correct

4 0
3 years ago
Read 2 more answers
what is the average velocity if the initial velocity of an object is 10 m/s and the final velocity is 28 m/s?
sashaice [31]

19 m/s is the average velocity if the initial velocity of an object is 10 m/s and the final velocity is 28 m/s.

<u>Explanation:</u>

The initial and final velocity is given and the average velocity is asked, which can be calculated by the following method,

Given that initial velocity = 10 m/s and final velocity = 28 m/s

As we know that the average velocity = \frac{\text {final velocity}+\text {inital velocity}}{2}

Although, \text {averge velocity}=\frac{\text {total displacement}}{\text {total time}}

But here, there is only given initial and final velocity therefore it will be simply an average of the two.

\text {average velocity}=\frac{10+28}{2}=\frac{38}{2}=19 \mathrm{m} / \mathrm{s}

Therefore, the average velocity of the object is 19 m/s.

3 0
4 years ago
Read 2 more answers
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