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uranmaximum [27]
3 years ago
11

Need Some Help Please :)

Physics
2 answers:
joja [24]3 years ago
6 0
1. The amount of energy carried by the wave is related to the Amplitude of the wave.
2. A mechanical wave requires an initial energy input, Once this initial energy is added the wave travels through the medium until all it's energy is transferred.
yanalaym [24]3 years ago
6 0

Answer:

  1. The higher the wave, the higher the frequency
  2. Energies are transferred in mechanical waves through a medium

Explanation:

<u>How frequency relates to the energy of the wave</u>

Literally, frequency of a wave refers to the number of waves that move past a certain point during a given amount of time, (although it is often measured per second )

So, this means that when more waves moves past the given points, the frequency of the wave will get increased and if other wise, the frequency if the wave will get reduced, this is so because wave frequency is related to wave energy.

Since all that waves really are is traveling energy, the more energy in a wave, the higher its frequency. The lower the frequency is, the less energy in the wave.

<u>How energy is transferred through mechanical wave</u>

Mechanical waves are such that they're not capable of transmitting energy via vacuum. Hence, they need a medium to transmit these energies from one point to another.

All type of mechanical waves need a form of medium in order to transmit.

Take for instance:

  • A slinky wave requires the coils of the slinky;
  • A water wave requires water

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Light is shown through air on a diamond (n=2.42) and it partially reflects and refracts.
NikAS [45]

Answer:

Light is shown through air on a diamond n=2.42) and it partially reflects and reflects.

Based on the incident angle of 62.5 shown what is the angle of reflection of the light

question of options

21.5

6 0
3 years ago
The chemical equation provided shows iron rusting to form iron oxide. Use the drop-down menu to choose the coefficients that wil
Brrunno [24]

Answer:

4 Fe + 3 O_2 \rightarrow 2 Fe_2 O_3

Explanation:

The original equation is:

Fe + O_2 \rightarrow Fe_2 O_3

We notice that:

- we have 1 atom of Fe on the left, and 2 atoms of Fe on the right

- we have 2 atoms of O on the left, and 3 atoms of O on the right

Therefore, the equation is not balanced.

In order to balance it, we can add:

- a coefficient 3 in front of O_2

- a coefficient 2 in front of Fe_2 O_3

So we have:

Fe + 3 O_2 \rightarrow 2Fe_2O_3

Now the oxygen is balanced, but the iron it not balanced yet, since we have 1 Fe on the left and 4 on the right. Therefore, we should add a coefficient 4 on the Fe on the left:

4 Fe + 3 O_2 \rightarrow 2 Fe_2 O_3

3 0
3 years ago
Read 2 more answers
Assume the space shuttle's main engines produce 764,576 newtons of thrust, and the shuttle has a mass of 78,018 kg. Why does the
Nady [450]

Weight of anything = (mass) x (gravity in the place where the thing is)

Weight of anything on Earth = (mass) x (9.81 m/s²)

Weight of the shuttle = (78,018 kg) x (9.81 m/s²)

Weight of the shuttle, on Earth = 765,357 Newtons

Thrust of main engines = 764,576 Newtons

Are you starting to see the problem yet ?

The weight of the whole thing standing on the launch pad is 751 Newtons more than the maximum thrust of the main engines, and the engines can't lift it !  Even with all throttles wide open, the main engines alone would need about 175 <em>more</em> pounds of thrust to budge that load off the ground.  Even with the pedal to the metal, with flame and smoke belching out and covering the whole launch complex, the shuttle would just sit there and never leave the pad.

Well, no.  That's not exactly what would happen.  As the fuel in the main monster fuel tank is burned, the weight decreases.  So it would actually happen like this:  After the man announced "Zero !  We have ignition !  All engine running !", the ship would just sit there on the pad ... at first.  It would go nowhere and not even wiggle, <em>UNTIL</em> the first 175 pounds of fuel got burned without accomplishing anything.  The ship would then be 175 pounds lighter.  At that point, the weight would be exactly equal to the thrust of the main engines, and the vertical forces on the ship would be balanced.  Then, as MORE fuel continued to be wasted and the weight continued to decrease, the main engines could just begin to lift the ship off the pad.

So the correct answer is <em>choice-D</em> .  It tells the whole story, quicker than I can tell it.

4 0
3 years ago
What does it mean to work out your core
Arte-miy333 [17]

Answer:

I'm pretty sure it means like getting abs and working out your stomach.

Explanation:

4 0
3 years ago
Use the specific heat values to answer the
Talja [164]

Answer:

3.0 g PB

Explanation:

6 0
3 years ago
Read 2 more answers
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