Answer:
Wood Resistance = 0.18 m².°C/W
Explanation:
The formula for heat flow in terms of thermal resistance is:
Q/A = ΔT/R
R = AΔT/Q
where,
R = Total Resistance = Resistance of Concrete + Resistance of wood = Resistance of wood + 0.26 m².°C/W
A = Surface Area of Wall = 3.2 m x 4.7 m = 15.04 m²
ΔT = Difference in temperature = 16°C - 2°C = 14°C
Q = Heat Flow = 476 Watt
Therefore,
0.26 m².°C/W + Wood Resistance = (15.04 m²)(14°C)/(476 W)
Wood Resistance = 0.44 m².°C/W - 0.26 m².°C/W
<u>Wood Resistance = 0.18 m².°C/W</u>
Answer:
Zero
Explanation:
Acceleration is defined as the rate of change in speed. The speed during the first second is 9m/1s = 9m/s. During the second second is again 9m/1s = 9m/s and again 9m/s for the third second. Being the speed the same, the acceleration is 0
Answer:
Rh = 97.67 m
Explanation:
given data
mass = 2400 kg
lands = 293 mm
solution
as here boulder is thrown upward so at some point will be hightest so at that velocity will be zero
so we apply here conservation of momentum
0 = m1 × v1 - mh × vh ...............1
m1 × v1 = mh × vh
× 2400 × v1 = × 2400 × vh
v1 = 3 vh
and
R = speed × time
time =
and
Rh = vh × time
Rh = v1 ×
Rh = 97.67 m
Answer:
I say vehicle one, because both will apply the same amount of force but, because vehicle two has less mass, it will accelerate more rather than vehicle one which will accelerate less.