Answer:

411.953 kpa

Explanation:

We have the following assumptions

1. Steady incompressible flow.

2. Burst section water pressure = water main pressure

3. Air and water have negligible friction between them.

Max height = 42 m

Max water density = 277.14k

Density of water

Pwater = 999.8395kg/m

Water gets to 42m because of pressure in the line

P (line) = Pwater * g * h

= 999.8395 x 9.81 x 42

= 411.953Kpa

I’m sorry what’s the question?

Magnitudes of the currents are i1= **0.00104A **, i2= **0.003641A **, i3= **0.00508A**.

**Explanation:**

Using **superposition theorem**,

remove the E1 voltage supply source and calculate resistance across it.

From the circuit given, as the resistances R1 and R2 are parallel

using the formula R1//R2=(R1.R2/(R1+R3)

**V1= ((r1||r2)/(r1+r2||r3))*E1
**

v1 = (((1kΩ*680Ω)/(1kΩ+680Ω))/(3.3kΩ +((1kΩ*680Ω)/(1kΩ+680Ω)))*10v

v1= 2.3v

**v2 = ((r1||r2)/(r1+r2||r3))*E2
**

v2 = (((1kΩ*680Ω)/(1kΩ+680Ω))/(3.3kΩ +((1kΩ*680Ω)/(1kΩ+680Ω)))*5v

v2= 1.161v

**V = V1+V2**

=> 2.3 + 1.161

=> 3.461v

Magnitudes of the currents can be found by** i=v/r**

i1 = v/r1

=> 3.461/3.3kΩ

=>0.00104A

i2=2.89/1kΩ

=>0.003461A

i3=2.89/680Ω

=> 0.00508A.

Therefore the magnitudes of the currents are i1, i2, and i3.

Answer:

5.7058kj/mole

Explanation:

Please see attachment for step by step guide

**Answer:**

Scientists observe the world, while engineers focus on creating. While both fields do involve observation and analysis, engineering mainly deals with creating and working on already existing creations, while scientists work with things in nature.