1. piano. that is the answer is my mind
Answer:
The new speed is 1230.28 m/h
Explanation:
The jet airliner moving initially at 503 mph to the east
The wind is blowing at 855 mph in a direction 52° north of east
At first let us distribute the velocity of the wind into east component
and north component
→ The east component is 855 cos(52) m/h
→ The north component is 855 sin(52) m/h
Now we have two components of velocity in the east direction
and one component of velocity in the north direction
The new speed is the resultant of the east and north components
→ The east components are 503 m/h and 855 cos(52) m/h
→ The north component is 855 sin(52) m/h
Add the components of the speeds in direction of east
→ The east component = 503 + 855 cos(52) = 1029.39 m/h
→ The north component = 855 sin(52) = 673.75 m/h
Now we can find the new speed as a resultant speed of the east and
north components
→ The new speed =
→ The new speed = 1230.28 m/h
<em>The new speed is 1230.28 m/h</em>
Answer:
The number density of the gas in container A is twice the number density of the gas in container B.
Explanation:
Here we have
P·V =n·R·T
n = P·V/(RT)
Therefore since V₁ = V₂ and T₁ = T₂
n₁ = P₁V₁/(RT₁)
n₂ = P₂V₂/(RT₂)
P₁ = 4 atm
P₂ = 2 atm
n₁ = 4V₁/(RT₁)
n₂ =2·V₁/(RT₁)
∴ n₁ = 2 × n₂
Therefore, the number of moles in container A is two times that in container B and the number density of the gas in container A is two times the number density in container B.
This can be shown based on the fact that the pressure of the container is due to the collision of the gas molecules on the walls of the container, with a kinetic energy that is dependent on temperature and mass, and since the temperature is constant, then the mass of container B is twice that of A and therefore, the number density of container A is twice that of B.
Answer:
b 1.39 m/s²
Explanation:
Given the following data;
Time = 12 seconds
Distance, S = 100 m
Since it's starting from rest, the initial velocity is equal to 0m/s.
To find the acceleration, we would use the second equation of motion;
Where;
S represents the displacement or height measured in meters.
u represents the initial velocity measured in meters per seconds.
t represents the time measured in seconds.
a represents acceleration measured in meters per seconds square.
Substituting into the equation, we have;
100 = 0(12) + ½*a*12²
100 = 0 + 72
100 = 72a
Acceleration, a = 100/72
Acceleration, a = 1.389 ≈ 1.39 m/s²