Answer:
The time elapsed at the spacecraft’s frame is less that the time elapsed at earth's frame
Explanation:
From the question we are told that
The distance between earth and Retah is 
Here c is the peed of light with value 
The time taken to reach Retah from earth is 
The velocity of the spacecraft is mathematically evaluated as

substituting values


The time elapsed in the spacecraft’s frame is mathematically evaluated as

substituting value
![T = 90000 * \sqrt{ 1 - \frac{[2.4*10^{8}]^2}{[3.0*10^{8}]^2} }](https://tex.z-dn.net/?f=T%20%20%3D%20%2090000%20%2A%20%20%5Csqrt%7B%201%20-%20%20%5Cfrac%7B%5B2.4%2A10%5E%7B8%7D%5D%5E2%7D%7B%5B3.0%2A10%5E%7B8%7D%5D%5E2%7D%20%7D)

=> 
So The time elapsed at the spacecraft’s frame is less that the time elapsed at earth's frame
The distance covered is (4) times (the car's average speed during that time).
Here is the answer. The external cause code for a passenger that is involved in a MVA that lost control on the highway and hits a guardrail is E815. Your fifth digit is a 1 for a motor vehicle
passenger. You would use an additional E code when a place of occurrence (example, home or parking lot) is
documented. In this case, the location is documented as the highway. Hope this helps.
Answer:
a) 
b) 
c) The wall may not be under steady because the two surfaces of the wall are exposed to the air at different temperatures and they have different convective coefficient.
Explanation:
Given:
- temperature of the inner surface of the wall,

- temperature of the outer surface of the wall,

- temperature of the air outside,

- temperature of the air inside,

- coefficient of heat convection on outside,

- coefficient of heat convection on inside,

a)
The heat flux between the interior air and the wall:
The convective heat transfer rate is given as,




b)
The heat flux between the exterior air and the wall:



c)
The wall may not be under steady because the two surfaces of the wall are exposed to the air at different temperatures and they have different convective coefficient.
Sea and land breezes are caused because the land heats and
cools more quickly than the water. The correct option for the given question is
option “b”. A sea breeze is a breeze that blows from the sea to the land. The
land becomes coo quicker than the sea resulting in the sea breeze. A land
breeze is caused during the day when the land is hotter than the sea. The hot
air blows from the land towards the sea.