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hram777 [196]
3 years ago
6

Which of the following statements are true for an adiabatic process? Check all that apply. Check all that apply. An adiabatic pr

ocess is carried out at constant temperature. An adiabatic process is carried out at constant volume. During an adiabatic process, there is no heat transfer into or out of the system. An adiabatic process is carried out at constant pressure. During an adiabatic process, the internal energy of the system changes.
Physics
1 answer:
AlladinOne [14]3 years ago
6 0

Explanation:

An adiabatic process is defined as a process in which transfer of heat is equal to zero. According to the first law of thermodynamics, any change in the internal energy is actually in the form of work done.

This means that change in internal energy will be as follows.

         Change in internal energy = -work one by the gas

Therefore, we can conclude that true statements for an adiabatic process is as follows.

  • During an adiabatic process, the internal energy of the system changes.
  • During an adiabatic process, there is no heat transfer into or out of the system.

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Light passes from a material A, which has an index of refraction of 4/3, into material B, which has an index of refraction of 5/
katrin2010 [14]

Answer:

(b) 32.2°

Explanation:

Using Snell's law as:

n_i\times {sin\theta_i}={n_r}\times{sin\theta_r}

Where,  

{\theta_i}  is the angle of incidence  ( 30.0° )

{\theta_r} is the angle of refraction  ( ? )

{n_r} is the refractive index of the refraction medium  (Material B, n=5 / 4)

{n_i} is the refractive index of the incidence medium (Material A, n=4 / 3)

Hence,  

{\frac {4}{3}}\times {sin30.0^0}={\frac {5}{4}}\times{sin\theta_r}

Angle of refraction = sin^{-1}0.5333 = 32.2°

5 0
4 years ago
How to calculate kinetic energy using potential energy
stepladder [879]
It’s literally in your reading go re reas
3 0
3 years ago
Experimenting with free fall, Mariana observes that her baseball takes 1.5 s to travel the last 30m before hitting the ground. F
Art [367]

Answer:

37.8 m

Explanation:

At point 0, the ball is at height y₀.

At point 1, the ball is at height 30 m.

At point 2, the ball is at height 0 m.

Given:

y₁ = 30 m

y₂ = 0 m

v₀ = 0 m/s

a = -10 m/s²

t₂ − t₁ = 1.5 s

Find: y₀

Use constant acceleration equation.

y = y₀ + v₀ t + ½ at²

Evaluate at point 1.

y₁ = y₀ + v₀ t₁ + ½ at₁²

30 m = y₀ + (0 m/s) t₁ + ½ (-10 m/s²) t₁²

30 = y₀ − 5t₁²

Evaluate at point 2.

y₂ = y₀ + v₀ t₂ + ½ at₂²

0 m = y₀ + (0 m/s) t₂ + ½ (-10 m/s²) t₂²

0 = y₀ − 5t₂²

y₀ = 5t₂²

Substitute:

y₀ = 5 (1.5 + t₁)²

y₀ = 5 (2.25 + 3t₁ + t₁²)

y₀ = 11.25 + 15t₁ + 5t₁²

30 = 11.25 + 15t₁ + 5t₁² − 5t₁²

30 = 11.25 + 15t₁

t₁ = 1.25

30 = y₀ − 5t₁²

30 = y₀ − 5(1.25)²

y₀ ≈ 37.8

4 0
4 years ago
Elements in group ____ are known as salt formers
Zinaida [17]
The group that is known as a salt former is the halogens group
5 0
3 years ago
The length of a wooden rod is 25.5 cm. What is this length in:<br>(a) millimetres?<br>(b) metres?​
larisa86 [58]

Answer:

(a)255mm \\ (b)0.255m

Explanation:

(a)1cm = 10mm \\ 25.5cm = x

Cross multiply

1x = 25.5 \times 10 \\ x = 255mm

(b)100cm = 1m \\ 25.5cm = x

cross multiply

100x = 25.5 \\  \frac{100x}{100}  =  \frac{25.5}{100}  \\ x = 0.255m

hope this helps

brainliest appreciated

good luck! have a nice day!

4 0
4 years ago
Read 2 more answers
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