Answer: 12.4 feet
Explanation:
If there is a smooth transition and there is no change in slopes, energy considerations can be used
The cube has a kinetic energy of
ke = mv^2/2 = 10 lbm * 20^2ft^2/s^2 / 2 = 2000 lbm-ft^2 / s^2
At the highest point when there is a gain in potential energy
pe = mgh = 10 lbm * 32.2 ft/s^2 * h ft = 322 lbm ft^2/s^2
If there is no loss in energies,
pe = ke
322h lbm ft^2/s^2 = 2000 lbm ft^2/s^2
h = 2000 /322 = 6.211 (ft)
= h / sin(30) = 12.4 ft
Answer:
Rate of heat loss per unit length of pipe, q' = 767.01 W/m
Explanation:
Let q' be the Rate of heat loss per unit length
Let q be the Rate of heat loss
q' = q/L
Where L is the length of the pipe
Diameter, D= 0.6m
The rate of heat loss q is given by the formula: q = Sk(T₂ - T₁)
Where k is the thermal conductivity of the concrete at 300 K
k = 1.4 Wb/m-K (at 300K)
And S is the shape factor given by the formula:
S = 2πL/ ln(1.08w/D)
S = (2π*L) / ln(1.08*1.75/0.6))
S = (2π*L) / 1.147
S = 5.48 L
q = 5.48L*1.4(400-300)
q = 767.01 L
q' = q/L
q' = 767.01L/L
q' = 767.01 W/m
Answer:
The force over the plane windows are 764 lbf in the EE unit system and 3398 N in the international unit system.
Explanation:
The net force over the window is calculated by multiplying the difference in pressure by the area of the window:
F = Δp*A
The pressure inside the plane is around 1 atm, hence the difference in pressure is:
Δp = 1atm - 0.35 atm = 0.65 atm
Expressing in the EE unit system:
Δp = 0.65 atm * 14.69 lbf/in^2 = 9.55 lbf/in^2
Replacing in the force:
F = 9.55 lbf/in^2 * 80 in^2 = 764 lbf
For the international unit system, we re-calculate the window's area and the difference in pressure:
A = 80 in^2 * (0.0254 m/in)^2 = 0.0516 m^2
Δp = 0.65 atm * 101325 Pa = 65861 Pa = 65861 N/m^2
Replacing in the force:
F = 65861 N/m^2 *0.0516 m^2 = 3398 N
Answer:
Science is finding out the things in the world and creations.
Nation Building is creating things human made.
Explanation:
Science is a major part in our world and scientists do that to find out.
Nation Building is human made for humans.
