Answer:
The change in specific internal energy is 3.5 kj.
Explanation:
Step1
Given:
Total change in energy is 15.5 kj.
Change in kinetic energy is –3.5 kj.
Change in potential energy is 0 kj.
Mass is 5.4 kg.
Step2
Calculation:
Change in internal energy is calculated as follows:
kj.
Step3
Specific internal energy is calculated as follows:
kj/kg.
Thus, the change in specific internal energy is 3.5 kj/kg.
Answer:
Load sup[port by beam is 1040 lb/ft
Explanation:
Given data:
dead load of floor is 50 psf
live load of floor is 80 psf
load per meter can be determined as
Load/mt length = load intensity × effective width
total load = deal load + live load
= 50 + 80 = 130 psf
load /mt length = 130 × 8
= 1040 p/ft = 1.04 k /ft
hence load sup[port by beam is 1040 lb/ft
Answer:
The answer is below
Explanation:
1)
2)
3)
Because of the short, the resistance is zero.
4)
5)
6)
Answer:
Check the explanation
Explanation:
<u>Given data
</u>
Mass of the block A is Ma = 10kg
Mass of the plate is Mp = 5kg
Coefficient of restitution between the block and that of the plate is e=0.75
Unstretched length of the spring is 0.6m
From the conservation of energy, we have four motion of block A from (1) to (2)
Then accordingly, we will have the step by step calculation in the attached image below
.
Answer:
The barrel with the sharp edge will drain faster.
Explanation:
The barrel with filed down entrance will gradually allow water to flow out due to the soft round corner.
However, the barrel with sharp edge will create turbulent eddies because of the sudden contraction phenomenon at the exit point. This turbulent eddies will occur in the inside portion of the sharp edge. First, let us understand what Eddies are.
An eddy, is fluid current whose flow direction differs from that of the general flow. Eddies can transfer much more energy and dissolved matter within the fluid and they actually mix together large masses of fluid. They generally become more numerous as the fluid flow velocity increases.
Based on the above definition, we can see that due to the sharp edge created, the flow direction differs from that of the general flow thereby creating eddies that are usually turbulent which causes more outflow of water than that with the soft edge.
