3 years ago

Answer this plssss12th questionThis is a question which they asked in board

Physics

1 answer:

Kisachek [45]3 years ago

8 0

I don't know I'm just a troll.

You might be interested in

What is meaning of convection

yulyashka [42]

Answer:

Convection is heat transfer through the movement of liquids and gases.

5 0

3 years ago

Given that both liquid A and B exert the same amount of pressure .What would be the height of column of liquid A if the density

Black_prince [1.1K]

Answer:

ans 5

Explanation:

hope it's help It seems to me

8 0

3 years ago

10 PTS. If an electromagnetic wave has a frequency of 8 ⋅ 10^14 H z , what is its wavelength? Use λ=V/F. The speed of light is 3

ad-work [718]

Answer :

The wavelength would be 410 m/s

3 0

3 years ago

A reaction has a rate constant of 0.0117 s-1 at 400.0 k and 0.689 s-1 at 450.0 k. calculate the activation energy in kilojoules

Zina [86]

By definition we have to:
LOG (k2 / k1)=(-Ea/R)*(1/T1-1/T2)
Where,
k1 = 0.0117 s-1
K2 = 0.689 s-1
T1 = 400.0 k
T2 = 450.0 k
R is the ideal gas constant
R = 8.314 KJ / (Kmol * K)
Substituting
ln (0.0117/0.689)=-Ea/(8.314)*((1/400)-(1/450))
Clearing Ea:
Ea = 122 kJ
answer
 the activation energy in kilojoules for this reaction is
 Ea = 122 kJ

7 0

3 years ago

Read 2 more answers

A very thin oil film (n = 1.25) floats on water (n = 1.33). What is the thinnest film that produces a strong reflection for gree

mixer [17]

Answer:

200 nm is the thinnest film that produces a strong reflection for green light with a wavelength of 500 nm

Explanation:

If two reflected waves interfere constructively ,strong reflection is produced. Two reflected waves will experience a phase change

For constructive interference

$2\times n\times t=m\lambda$