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Nikolay [14]
2 years ago
12

What is the difference is a hypothesis and a theory

Physics
1 answer:
Tresset [83]2 years ago
5 0
A hypothesis is an educated guess, while a theory is usually a tested, well substained explanation of something.
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Suppose you are observing the interference pattern formed by a Michelson interferometer in a laboratory and a joking colleague h
Troyanec [42]

Answer:

Explanation:

In Michelson interferometer , two light waves from different directions are made to overlap so that fringes are formed on the screen due to interference . In it,  two monochromatic and coherent light are made to overlap which have some path difference or phase difference. They form dark and bright fringes .

Now when a match stick is lit in the path of a wave , the fringes will disappear  and an general illumination will be observed on the screen as the light from the lit match stick will not be coherent . Incoherent light can not form stable fringes.

7 0
3 years ago
A battery powers a circuit for a small noisy fan. The fan's motor gets warm as it turns. What energy transformations are
Pepsi [2]

Answer:

Chemical energy to electrical energy to mechanical and thermal energy

Explanation:

In the rotating fan, the chemical energy stored in the battery is used to generate electrical energy.

The electrolytes within the battery undergoes chemical reactions that produces electric current.

  • The current is being used to drive the motor of the fan to produce a mechanical energy as it rotates.
  • In like manner, heat energy is also produced.
  • So, energy is simply being transformed from one form to the other in this system.
3 0
2 years ago
Read 2 more answers
What is the photoelectric effect?
n200080 [17]

the emission of electrons or other free carriers when light shines on a material.

4 0
3 years ago
Read 2 more answers
What is the speed of a sound wave that takes 0.5 s to travel 750 m?
kvasek [131]

Answer:

C. 1500.

Explanation:

750 / .5 = 1500.

Hope this helps & best of luck!

Feel free to message me if you need more help! :)

4 0
3 years ago
Fifteen grams of substance X at 95 degrees Celsius is mixed with 45 grams of substance Z at 85 degrees Celsius in a container wh
Viefleur [7K]
According to the Law of Conservation of Energy, energy is neither created nor destroyed. They are just transferred from one system to another. To obey this law, the energy of the substances inside the container must be equal to the substance added to it. The energy is in the form of heat. There can be two types of heat energy: latent heat and sensible heat. Sensible heat is energy added or removed when a substance changes in temperature. Latent heat is the energy added or removed at a constant temperature during a phase change. Since there is no mention of phase change, we assume the heat involved here is sensible heat. The equation for sensible heat is:

H = mCpΔT
where
m is the mass of the substance
Cp is the specific heat of a certain type of material or substance
ΔT is the change in temperature.

So the law of conservation of heat tells that:

Sensible heat of Z + Sensible heat of container = Sensible heat of X

Since we have no idea what these substances are, there is no way of knowing the Cp. We can't proceed with the calculations. So, we can only assume that in the duration of 15 minutes, the whole system achieves equilibrium. Therefore, the equilibrium temperature of the system is equal to 32°C. The answer is C.
5 0
3 years ago
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