9. How is the Air Delivery temperature controlled during A/C operation?

A solid cylinder of diameter 100 mm and height 50 mm is forged between two frictionless flat dies to a height of 25 mm. What is

coldgirl [10]

Answer:

d. 41.4

Explanation:

The initial diameter di = 100mm

The initial height hi {✓59m

Final height = 25 m

Final diameter = ?

Initial volume = after forging volume

D*(di)²*hi = D *(df)²*hf

D will cancel out from either sides of the equation

100² x 50 = df²x25

10000x2 = df²

20000 = df²

df = √20000

df = 141.42mm

Change in diameter = 141.42-100

= 41.42

The percentage change = 41.42/100*100

= 41.4%

The last option is the answer

4 0

3 years ago

The entrance of the space module into atmosphere is one of the very critical phases of any space mission. Due to the formation o

Hatshy [7]

Answer:

Check the explanation

Explanation:

The transferred energy calculations can be done using the equation:

This is when:

• power is calculated in watts (W)

• energy is calculated in joules (J)

• time is calculated in seconds (s)

it can also be calculated by utilizing the same equation but with different units:

• when energy is measured in kilowatt-hours (kWh)

• when power is measured in kilowatts (kW)

• and when time is measured in hours (h)

kindly check the comprehensive step by step calculation to the question in the attached images below

5 0

4 years ago

A satellite orbits the Earth every 2 hours at an average distance from the Earth's centre of 8000km. (i) What is the average ang

AlexFokin [52]

Answer:

i)ω=3600 rad/s

ii)V=7059.44 m/s

iii)F=1245.8 N

Explanation:

i)

We know that angular speed given as

$\omega =\dfrac{d\theta}{dt}$

We know that for one revolution

θ=2π

Given that time t= 2 hr

So

ω=θ/t

ω=2π/2 = π rad/hr

ω=3600 rad/s

ii)

Average speed V

$V=\sqrt{\dfrac{GM}{R}}$

Where M is the mass of earth.

R is the distance

G is the constant.

Now by putting the values

$V=\sqrt{\dfrac{GM}{R}}$

$V=\sqrt{\dfrac{6.667\times 10^{-11}\times 5.98\times 10^{24}}{8000\times 10^3}}$

V=7059.44 m/s

iii)

We know that centripetal fore given as

$F=\dfrac{mV^2}{R}$

Here given that m= 200 kg

R= 8000 km

so now by putting the values

$F=\dfrac{mV^2}{R}$

$F=\dfrac{200\times 7059.44^2}{8000\times 10^3}$

F=1245.8 N

3 0

3 years ago

1. Saturated steam at 4 bars absolute pressure with a mean velocity of 3 m/s flows through a horizontal SS304 stainless-steel pi

saveliy_v [14]

Answer:

(a) Rate of heat transfer = 34.65 W/m

(b) quality of outlet of pipe x = 0.967

(c) Temperature of outer surface of insulation, T₂ = U1.157°C

Yes it is safe to touch, (But gentle touch)

Explanation:

Detailed explanation is given in the attach document.

5 0

4 years ago

In order to impress your neighbors and improve your vision in traffic jams, you decide to mount a cylindrical periscope 2.0 m hi

kondaur [170]

Follow @richard.gbe on Instagram for the answer

5 0

4 years ago