Answer:
subjective im pretty sure
Explanation:
Answer: 383.22K
Explanation:
L = 3m, w = 1.5m
Area A = 3 x 1.5 = 4.5m2
Q' = 750W/m2 (heat from sun) ,
& = 0.87
Q = &Q' = 0. 87x750 = 652.5W/m2
E = QA = 652.5 x 4.5 = 2936.25W
T(sur) = 300K, T(panel) = ?
Using E = §€A(T^4(panel) - T^4(sur))
§ = Stefan constant = 5.7x10^-8
€ = emmisivity = 0.85
2936.25 = 5.7x10^-8 x 0.85 x 4.5 x (T^4(panel) - 300^4)
T(panel) = 383.22K
See image for further details.
Answer:
1568N
2195.2J
Explanation:
Given parameters:
Mass of the weight = 160kg
Distance = 1.4m
Unknown:
Force applied to lift the weight = ?
Energy expended = ?
Solution:
The force applied in moving a body with a given mass through a distance is the weight;
Force applied = mg
Where m is the mass
g is the acceleration due to gravity
i. Applied force = 160 x 9.8 = 1568N
ii. The energy used to lift the weight is given as;
Energy = mgh
h is the vertical distance
Energy = 1568 x 1.4 = 2195.2J
Answer:
Overall project duration
Explanation:
Scheduling can best be defined as the process used to determine a overall project duration.
Answer:
Carbon monoxide has no odor, color or taste,so it cannot be detected by our senses. This means that dangerous concentrations of the gas can build up indoors and humans have no way to detect the problem until they become ill.