Answer:
419.25 lbs
Explanation:
Let iron density be 491.5 lb/ft3
and aluminum density be 169 lb/ft3
We can calculate the mass of iron that displaces 1.3ft3
Also the mass of aluminum that displaces 1.3 ft3
So by using aluminum, the airplane can save
638.95 - 219.7 = 419.25 lbs of weight
Had to look for the options and here is my answer.
I can say that it would be ten times as much of the Sun's radiation would strike if the Earth did not have its atmosphere. The Earth's atmosphere consists of different layers which are composed of different gases. Each of these play an important role in enveloping and regulating the Earth's internal temperature. Hope this helps.
Answer:
No, there won't be a collision.
Explanation:
We will use the constant acceleration formulas to calculate,
v = u + a*t
0 = 25 + (-0.1)*t
t = 250 seconds (the time taken for the passenger train to stop)
v^2 = u^2 + 2*a*s
0 = (25)^2 + 2*(-0.1)*s
s = 3125 m (distance traveled by passenger train to stop)
If the distance traveled by freight train in 250 seconds is less than (3125-200=2925 m) than the collision will occur
Speed*time = distance
Distance = (15)*(250)
Distance = 3750 m
As the distance is way more, there won’t be a collision
Answer:
The heat loss is
Explanation:
From the question we are told that
The thickness is
The inner temperature is
The outer temperature is
The length of the window is L = 1 m
The width of the window is w = 3 m
Generally the heat loss is mathematically represented as
Where k is the thermal conductivity of glass with value
and A is the area of the window with value
substituting values
Answer:
a) 0.048A
b) 0.18µC
c) 1.85A
Explanation:
The discharged current of the capacitor as a function of time is given by:
a)
b)
c) the maximum current occurs when t=0