Answer:
The answer is 11.7 ft
Explanation:
You can use the combined gas law from Boyle's law, Charles's law, and Gay-Lussac's Law. Only because hydrogen behaves like an ideal gas for this conditions.
where the subscripts denote the pressure "p", volume "V" and the temperature "T" (in Kelvin) at two different times. Let's consider as the balloom at 150,000 ft so
and .
Then, is the moment when the balloon is on the ground.
and .
From the first equation,
, then
and the radius would be
.
Answer:
b.) pneumatic system
Explanation:
This system uses compressed air to transmit and control energy
Answer:
(D) Unlike traditional techniques, 3-D printing results in some wasted material.
Explanation:
3-D printing :
1. It is also known as additive manufacturing.
2. It can use for complex shape printing.
3.It is generally use in fashion areas.
4. In this printing method wasted material is very low as compare to traditional printing.
5.It is use CAD system for printing.
So the option D is correct.
(D) Unlike traditional techniques, 3-D printing results in some wasted material.
Answer:
16.46 kg/s
Explanation:
We solve this by writing an energy balance around the open feed water heater:
E,in=E,out
We know that heat transfer to surroundings and kinetic and potential energy are zero.
We can use the thermodynamic tables for saturaed liquid and steam to solve for the enthalpies.
For inlet 1:
50°C, 10 bar
For inlet 2:
steam, 10 bar, 200°C
For outlet 3:
Saturated liquid at 10 bar
We can also perform a mass balance:
We can solve the energy balance:
Solve for m₂