1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
topjm [15]
3 years ago
7

Help me with Economics please and thank you the question is going to be down in a attached file while the answers on here

Physics
2 answers:
Tresset [83]3 years ago
6 0
I think is A or B it depends on like what the trying to answer
Usimov [2.4K]3 years ago
6 0

zoooooooooooooom i am here

You might be interested in
A cook removes a one-gallon pot of hot soup from a stove and places it in an ice-water bath to cool. which is the best cooling p
Verizon [17]

I thank it is #2 or #1 hop this helps;)

5 0
3 years ago
Bones provide both structure and protection for the body. A t. B f
vovikov84 [41]

Answer:

what are you saying man. They do provide structure.

Explanation:

6 0
3 years ago
Which type of wave does the illustration depict?
Naddika [18.5K]
A transverse wave. A wave is a disturbance that transmits energy from one place to another by the particles of the medium.
4 0
2 years ago
Read 2 more answers
k) A stream of warm water is produced in a steady-flow mixing process by combining 1.0 kg s-1of cool water at 25°C with 0.8 kg s
Irina18 [472]

Answer:

T_ww = 43,23°C

Explanation:

To solve this question, we use energy balance and we state that the energy that enters the systems equals the energy that leaves the system plus losses. Mathematically, we will have that:

E_in=E_out+E_loss

The energy associated to a current of fluid can be defined as:

E=m*C_p*T_f

So, applying the energy balance to the system described:

m_CW*C_p*T_CW+m_HW*C_p*T_HW=m_WW*C_p*T_WW+E_loss

Replacing the values given on the statement, we have:

1.0 kg/s*4,18 kJ/(kg°C)*25°C+0.8  kg/s*4,18 kJ/(kg°C)*75°C=1.8 kg/s*4,18 kJ/(kg°C)*T_WW+30  kJ/s

Solving for the temperature Tww, we have:

(1.0 kg/s*4,18 kJ/(kg°C)*25°C+0.8 kg/s*4,18 kJ/(kg°C)*75°C-30 kJ/s)/(1.8 kg/s*4,18 kJ/(kg°C))=T_WW

T_WW=43,23 °C

Have a nice day! :D

6 0
3 years ago
A bag of marbles is hanging motionless on a spring scale. What prevents the bag from falling?​
Tanya [424]

Answer:

The vector sum of all forces acting on it is zero, its at equilibrium.

Explanation:

The bag of marbles hanging on a spring scale applies its weight downwards, which was counterbalanced by the reaction from the spring scale (obeying the Newton's third law of motion). And since no external forces are applied to the system, thus the equilibrium of the system.

If the weight of the bag is greater than the reaction from the spring scale, the scale breaks and the system would not be balanced.

7 0
3 years ago
Other questions:
  • A gardener pushes her 90 kg wheelbarrow in a straight line out of her garage and across the yard in 18 s. If her average velocit
    15·1 answer
  • An electron moves 4.5 m in the direction of an electric field of strength of 325N/C. Determine the change in electrical potentia
    5·1 answer
  • Why does Earth's moon have no atmosphere?
    9·1 answer
  • How many ft/s is 60 mph/hr
    12·1 answer
  • Which is given as an explanation for how the Paleozoic supercontinent ice cap melted
    9·2 answers
  • Is there any electric field inside a conductor carrying an electric current ??
    13·1 answer
  • If an object has 100 J of PE, how much work can it do (with that PE)?
    15·1 answer
  • A radio wave transmits 38.5 W/m2 of power per unit area. A flat surface of area A is perpendicular to the direction of propagati
    7·1 answer
  • What causes a liquid to freeze? A. When particles speed up and get closer together. B. When particles stop moving. C. When parti
    15·1 answer
  • A bike accelerates uniformly from rest to a speed of 10 m/s over a distance of 50 m. (a) Determine the acceleration of the bike.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!