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Nuetrik [128]
4 years ago
9

Why are variables important in a science investigation?

Physics
1 answer:
Arte-miy333 [17]4 years ago
3 0
Because a variable is an important stratagy of science
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Calculate the longest wavelength visible to the human eye 164 kj mol
const2013 [10]
The working equation to be used here is the Planck's equation. This was derived using the wave behavior theory of the light and electromagnetic waves. According to this equation, electron transfer from orbital to orbital in discrete packets of energy called quanta. When an electron moves to a higher energy level, it absorbs energy. On the other hand, when it lowers to an energy level, it releases energy by emitting light. Hence, the wavelength of the light or magnetic wave can be determined.

E = hν = hc/λ, where ν is the frequency, λ is the wavelength, h is the Planck's constant equal to 6.626×10⁻³⁴ J-s and c is the speed of light equal to 3×10⁸ m/s.

Knowing the energy to be 164 kJ or 164,000 J, the wavelength is equal to

164,000 = (6.626×10⁻³⁴)(3×10⁸ m/s)/λ
λ = 1.212×10⁻³⁰ meters

8 0
4 years ago
Mr. Llama walked from his house to the bus stop. The bus stop is 2 miles from his house. He returned back to his house from the
Hoochie [10]

Answer:

Displacement of Mr. Llama: Option D. 0 miles.

Explanation:

The magnitude of the displacement of an object is equal to the distance between its final position and its initial position. In other words, as long as the initial and final positions of the object stay unchanged, the path that this object took will not affect its displacement.

For Mr. Llama:

  • Final position: Mr. Llama's house;
  • Initial position: Mr. Llama's house.

The distance between the final and initial position of Mr. Llama is equal to zero. As a result, the magnitude of Mr. Llama's displacement in the entire process will also be equal to zero.

7 0
4 years ago
Two identical rooms in a house are connected by an open doorway. The temperatures in the two rooms are maintained at different v
Inga [223]

Answer:

The room with the lower temperature

Explanation:

Using

PV=nRT

Since both the rooms same volume and are connected, so they will have same pressure

PV=nRT=constant

nT=Constant/R=constant

If T is more n has to be less

Thus, lower the temperature, more the number molecules.

6 0
4 years ago
How many planets on the solar system?
vitfil [10]

Answer:

8

Explanation:

tsijtsiztuztuistizrizturzurz

4 0
3 years ago
Read 2 more answers
If a bicycle is going 8 m/s for 29 seconds how far does it go?
VladimirAG [237]

Answer:

232

Explanation:

D=S*T

(By distance formula)

8*29=

232

4 0
3 years ago
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