Ask question

Ask question

All categories

3 years ago

8

i need jacket for my daughter who will be going on a girls scouts camping trip it cannot be bulky because she is limited to one

backpack for this trip

2 answers:

BabaBlast [244]3 years ago

7 0

Get her a windbreaker it will keep her warm but wont take up space

lawyer [7]3 years ago

6 0

What’s the question?

You might be interested in

Why do bridges collapse?

Reika [66]

Hi! bridges could have been collapse due to an error made by the engineers during construction.

8 0

2 years ago

Read 2 more answers

Give the approximate temperature (in K) at which creep deformation becomes an important consideration for each of the following

andrezito [222]

Answer:

691K, 543K, 725K, 1473K, 240K, 373K

Explanation:

Creep deformation of any metal is the transformational tendency of a metal to distort rapidly or slowly when attacked by any form of mechanical stress. The temperature significant for a metal to deform is gotten by the division of the actual temperature of the metal by its melting point. This is termed homologous temperature which is 0.4 or higher. It is calculated by the equation:

0.4Tm

Therefore for the listed metals...

For Nickel, 0.4Tm = 0.4 ×(1455 + 273) = 691 K

For Copper, 0.4Tm = 0.4 ×(1085 + 273) = 543 K

For Iron, 0.4Tm = 0.4 ×(1538 + 273) = 725 K

For Tungsten, 0.4Tm = 0.4 ×(3410 + 273) = 1473 K

For Lead, 0.4Tm = 0.4 × (327 + 273) = 240 K

For Aluminium, 0.4Tm = 0.4 ×(660 + 273) = 373 K

5 0

3 years ago

The National Park Service is waiting on your recommendation.

maksim [4K]

The hypothesis that would help restore equilibrium is reintroduce wolves in the park or into the forest.

<h3>What is reintroduce?</h3>

To reintroduce, is a term that means to revive, reinstate, or bring back something.

Note that based on the right recommendation needed by National Park Service, one can say that the best hypothesis that would help restore equilibrium is reintroduce wolves in the park or into the forest as it will help restore balance.

Learn more about hypothesis from

brainly.com/question/24149728

#SPJ1

8 0

2 years ago

Air flows through a device in which heat and work is exchanged. There is a single inlet and outlet, and the flow at each boundar

Pepsi [2]

Answer:

11548KJ/kg

10641KJ/kg

Explanation:

Stagnation enthalpy:

$h_{T} = c_{p}*T + \frac{V^2}{2}$

given:

cp = 1.0 KJ/kg-K

T1 = 25 C +273 = 298 K

V1 = 150 m/s

$h_{1} = (1.0 KJ/kg-K) * (298K) + \frac{150^2}{2} \\\\h_{1} = 11548 KJ / kg$

Answer: 11548 KJ/kg

Using Heat balance for steady-state system:

$Flow(m) *(h_{1} - h_{2} + \frac{V^2_{1} - V^2_{2} }{2} ) = Q_{in} + W_{out}\\$

Qin = 42 MW

W = -100 KW

V2 = 400 m/s

Using the above equation

$50 *( 11548- h_{2} + \frac{150^2 - 400^2 }{2} ) = 42,000 - 100\\\\h_{2} = 10641KJ/kg$

Answer: 10641 KJ/kg

c) We use cp because the work is done per constant pressure on the system.

7 0

3 years ago

What Thermal efficiency

siniylev [52]

Of a heat heat engine is the percentage of heat energy that is transformed into work. i’m not sure what your question is tho

5 0

3 years ago

Read 2 more answers