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2 years ago

The speed of the wave depends on what?

1 answer:

4 0

The speed of a mechanical wave depends on the mechanical properties
of the medium through which the wave is traveling.

The speed of an electromagnetic wave depends on the electrical properties
of the medium through which the wave is traveling.

It's pretty well unanimous for choice A .

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Consider the waves on a vibrating guitar string and the sound waves the guitar produces in the surrounding air. The string waves

tatiyna

Answer:

Frequency is the correct answer.

Explanation:

When a wave go from one medium to another medium then the velocity, wavelength and Amplitude changes. But there is no change on the frequency.

Here, The string and the surroundings air are two medium , from which the wave travels.

So, the wave has same frequency in both medium.

The correct answer is Frequency.

5 0

3 years ago

Estimate the acceleration you subject yourself to if you walk into a brick wall at normal walking speed. (Make a reasonable esti

xenn [34]

Answer:

From certain assumptions that the walking speed is 2 m/s, and the stop time is 0.1 s the acceleration would be -20 m/s

Explanation:

Using the average acceleration formula:

$a=\frac{\Delta v}{\Delta t}$ where $\Delta v$ and $\Delta t$ are the changes in the speed and time respectively.

We have by assuming that the walking speed is 2 m/s and the stop time is 0.1s which is equal to the change in time during the stopping.

$\Delta v=v_f-v_i=0-2 m/s=-2 m/s$ , where $v_i,v_f$ are the initial speed and final speed respectively, and $\Delta t=0.1 s$

Plugging the previous in the average acceleration formula we get

$a=\frac{-2}{0.1}=-20\, m/s$ where the minus sign indicates an acceleration in the opposite direction of the motion (or in other word opposite to the speed's direction).

4 0

3 years ago

A) How much does an 85g apple weight on the surface of the Earth? (gEarth = 9.8 m/s2)

liq [111]

Look at the attached picture⤴

Hope it will help u .

4 0

3 years ago

The linear impulse delivered by the hit of a boxer is 202 N · s during the 0.244 s of contact. What is the magnitude of the aver

zlopas [31]

Answer: Magnitude of the average force exerted on the glove by the other boxer is 827.86 N (approximately 828 N).

Explanation: Impulse is defined as the force acting on an object for a short period or interval of time.

Mathematically it is given by the relation:

Impulse = Force $\times$ Time

According to the numerical values given in the question, I = 202 Ns and T = 0.244 s

So, Force F = $\frac{Impulse}{Time}$ = $\frac{202}{0.244}$ = 827.86 N

Magnitude of the average force exerted on the glove by the other boxer is 827.86 N (approximately 828 N).

7 0

3 years ago

aleksklad [387]

1. Mitosis and Meiosis are both ways cells duplicate DNA
2. They both go through PMAT ( prophase, metaphase, anaphase and telophase)

8 0

3 years ago