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tatyana61 [14]
3 years ago
5

12. Which of the following statements is accurate?

Physics
2 answers:
lara31 [8.8K]3 years ago
8 0

Answer:

a

Explanation:

Wewaii [24]3 years ago
7 0

Answer:

Option (a) is correct

Explanation:

The acceleration of an object is defined as the rate of change of velocity. Mathematically, it can be written as :

a=\dfrac{v-u}{t}

Where

v and u are final and initial velocity

It is clear that if there is some change in velocity, it means the object is experiencing either acceleration or deceleration. Hence, the correct option is (a).

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According to multiple scientific experiments, most objects develop an attraction towards Candice.

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La frecuencia de una onda es 60Hz y su velocidad, 30 m/s. Calcula su longitud de onda
Andreas93 [3]
           Wavelength = (speed) / (frequency)

                               =  (30 m/s) / (60/sec) =

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4 years ago
A system consists of N particles that can occupy two energy levels: a nondegenerate ground state and a three-fold degenerate exc
cupoosta [38]

Answer:

Ng = 0.893 N,  Ne = 0.107N

Explanation:

Number of particles in Ground state = Ng

Number of particles in Excited state = Ne

Ne/Ng = e^{(-ΔE)/kt}

Since excited state is 3 fold degenerate

Ne/Ng =3 x e^{(-ΔE)/kt}

ΔE = Energy difference between ground and excited states = 0.25eV

T = 960 K

Constant k = 8.617 x 10^-5 eV/K

Ne/Ng = 3 x e^{-0.25/(8.617x10^-5) x 960}

           = 3 x e^(-3.188645)

           = 3 x 0.0412 = 0.1237 ≅ 0.12

Ne = 0.12 Ng

but Ne + Ng = N, where is N is total number of particles, substituting Ne into equation we get,

Ng(1 + 0.12) = N

Ng = N/1.12 = 0.893N

and Ne = 0.12 x 0.893 N = 0.107 N

3 0
3 years ago
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Answer:

disa gree animals should be aloud to mate with another animal of the same breed freely

Explanation:

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3 years ago
How does the polar jet stream affect temperature and precipitation in North America?
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It increases the precipitation in North America.
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4 years ago
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