Answer:
to find the length just divide 7.50 and . 298
Nebular hypothesis.
Explanation:
- The first version of the nebula hypothesis was proposed by Immanuel Kant and Pierre Laplace.
- Today the hypothesis has been revised to fit into more current and update realities about how our solar system emerged.
- The hypothesis is the widely accepted explanation to the origin and evolution of the solar system.
- It suggests that the star and the planets that makes up the solar system were products of a huge cloud of dust called the nebular.
- The nebular is a huge mass of interstellar dusts.
- The cloud collapsed and condensed under gravitational pull of the materials.
- A center core that resulted in the formation of our star, sun emerged and the rest of the particles formed our planet.
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Answer:1.37
Explanation:
Given
Man run along the side walk and take 2.1 s
While walking in the opposite direction it takes 13.2 s
Let the speed of man and sidewalk be 
Let the distance between two points be x
From 1 & 2 we can get
The partial pressures of HBr when the system reaches equilibrium is 2.4 X 10⁻¹¹ atm
<u>Explanation:</u>
H₂ + Br₂ ⇒ 2HBr
PH₂ = 0.782atm
PBr₂ = 0.493atm
Kp = (PHBr)²/ (PH₂) (PBr₂) = 1.4 X 10⁻²¹
At equilibrium:
Let 2x = pressure of HBr
PH₂ = 0.782 -x
PBr₂ = 0.493 - x
Kp = (2x)^2 / (0.782-x)(0.493-x)
Now, because Kp is very small, x will be very small compared to 0.782 and 0.493.
Then,
Kp = 1.4X10⁻²¹ = (4x²) / (0.782)(0.493)
x = 1.2X10⁻¹¹
PHBr = 2x = 2.4 X 10⁻¹¹ atm
Therefore, the partial pressures of HBr when the system reaches equilibrium is 2.4 X 10⁻¹¹ atm
D
Because if an object is moving at a constant speed the force of friction must equal the applied (horizontal) force, and for it to be accelerating or decelerating, the force of friction and the applied force must be unequal
