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Vedmedyk [2.9K]
4 years ago
12

Which characteristic of a light wave must increase as the light wave passes from glass into air

Physics
1 answer:
RideAnS [48]4 years ago
5 0
The characteristic that must increase is the wavelength. In wave theory, it is said that the number of waves that enter is equal to the number of waves that exit a medium. As the speed of light changes due to the permittivity/permeability of the new medium, the only variable which can change to compensate this change is the wavelength.
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name the device used often to change the resistance without changing the voltage source in an electric circuit
timofeeve [1]
<em>the devices which are used to change the resistance in a circuit are called
<u>resisitors...
</u>the fact that they effect the voltage or not simply depends upon the type of resistor used in the circuit ...:)

</em>
5 0
3 years ago
Read 2 more answers
A dynamite blast at a quarry launches a rock straight upward, and 1.7 s later it is rising at a rate of 17 m/s. Assuming air res
Shtirlitz [24]

Answer:

(a) v_0= 34m/s

(b) v=14m/s

Explanation:

We can derive the initial speed of the rock from the equation of the speed in function of the time:

v=v_0-gt\\\\\implies v_0=v+gt

Using the given values for the speed at time t=1.7s, we get:

v_0=17m/s+(9.8m/s^{2})(1.7s)=34m/s

In words, the speed of the rock at launch is 34m/s (a).

Next, we use this to calculate the speed at t=4.9s:

v=v_0-gt\\\\v= 34m/s-(9.8m/s^{2})(4.9s)=-14m/s

This means that the speed of the rock at 4.9s after the launch is 14m/s (b), and the negative sign means that it is moving downwards.

3 0
3 years ago
Define prism and itz colo​
Aleks [24]

Answer:

prism was just a pyramid and if you strike it with white light, the white light then breaks down into 7 colors. (red,orange,yellow,green,blue,indigo,violet)

8 0
3 years ago
You drive a car from Milwaukee to Chicago in 95 min. What is its velocity in km/hr and m/s?Use 150km as your distance.
adell [148]
You are going 94.737 km/h or 26.316 m/s
speed = distance/time

look up a speed calculator if you have more problems like this, it’ll save you time :)
5 0
3 years ago
This problem has been solved!
Liono4ka [1.6K]

Answer:

Explanation:

In this problem we can use Bohr's atomic model, to deal with the electronic transition, so we can have transitions between two given states.

           ΔE = E_{f} -E₀

Lower state     final state                     energy

Fundamental      first excited state          ΔE₁ = -2.4 - (-4.7)  = 2.3 eV

Fundamental      second excited state   ΔE₂ = -1.0 - (-4.7) = 3.7 eV

Fundamental      third excited state        ΔE₃ = -0.3 - (-4.7) = 4.4 eV

As they indicate that there are no electrons in the excited states these are the only possible transitions.

When a wide range of light strikes, the frequencies of these energies are absorbed and observed as black bands (absence of radiation) in the spectrum.

3 0
3 years ago
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