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
lara31 [8.8K]
2 years ago
12

Si la eficiencia de una máquina de calor es del 50% significa que ?

Chemistry
1 answer:
Karolina [17]2 years ago
8 0

Answer:

No toques el link

Explanation:

You might be interested in
Air has a mass of 1.2g and a volume of 4,555ml. What is the density
coldgirl [10]

Answer:

<h2>Density = 0.00026 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

<h3>Density(\rho) =  \frac{mass}{volume}</h3>

From the question

mass of air = 1.2 g

volume = 4,555 mL

Substitute the values into the above formula and solve for the density

That's

<h3>Density =  \frac{1.2}{4555}</h3>

= 0.0002634

We have the final answer as

<h3>Density = 0.00026 g/mL</h3>

Hope this helps you

3 0
3 years ago
Please show the work :(What is the estimated force applied to the box if the acceleration is .40 m/s2?
lara31 [8.8K]

Answer:

20N

Explanation:

Given parameters:

        Force(N)     Acceleration(m/s²)  

            10                   0.2

           ?                      0.4

Unknown:

The force applied when the acceleration is 0.4m/s²

Solution:

From newton's second law of motion;

 Force = mass x acceleration

 Since we are using the same box, let us find the mass of the box;

      Force  = mass x acceleration

         10 = mass x 0.2

            mass = \frac{10}{0.2}  = 50kg

Now,

 The force in the second instance will be;

      Force  = 50 x 0.4  = 20N

8 0
2 years ago
Which of the following has kinetic energy?
shepuryov [24]

Answer:

moving arrow

have a great day ahead

please mark me as the brainliest

4 0
2 years ago
Read 2 more answers
Select all statements that correctly describe hemoglobin and myoglobin structure. a. Molecular oxygen binds irreversibly to the
DIA [1.3K]

Answer:

c. By itself, heme is not a good oxygen carrier. It must be part of a larger protein to prevent oxidation of the iron.

e. Both hemoglobin and myoglobin contain a prosthetic group called heme, which contains a central iron ( Fe ) (Fe) atom.

f. Hemoglobin is a heterotetramer, whereas myoglobin is a monomer. The heme prosthetic group is entirely buried within myoglobin.

Explanation:

The differences between hemoglobin and myoglobin are most important at the level of quaternary structure. Hemoglobin is a tetramer composed of two each of two types of closely related subunits, alpha and beta. Myoglobin is a monomer (so it doesn't have a quaternary structure at all). Myoglobin binds oxygen more tightly than does hemoglobin. This difference in binding energy reflects the movement of oxygen from the bloodstream to the cells, from hemoglobin to myoglobin.

Myoglobin binds oxygen

The binding of O 2 to myoglobin is a simple equilibrium reaction:

7 0
2 years ago
Which organism is most likely 10 centimeters in size?
djyliett [7]

Answer:

Actually, one of the more interesting organisms at those depths is the Xenophyophore, a creature which, despite being single-celled, can grow to be over 10 centimeters wide. "Scientists say xenophyophores are the largest individual cells in existence.

Explanation:

4 0
2 years ago
Other questions:
  • Shiloh wanted to observe the changes that occurred during an exothermic reaction. He monitored the changes and placed them in a
    12·1 answer
  • Most water on earth is in which form
    12·2 answers
  • Particles in a liquid move around just as freely as particles in a solid.
    10·2 answers
  • Two liquids are shaken together in a test tube to produce a uniform liquid that does not separate into layers. Which of the foll
    10·2 answers
  • Bohr's planetary of the atom stated that
    5·1 answer
  • I need help with two questions.
    6·2 answers
  • Shoals are raised landforms made of sand and gravel that are commonly found in Florida. They are often called sandbars and are l
    11·2 answers
  • Base A dissociates 25% in water. Base B dissociates 50%. Base C dissociates
    7·1 answer
  • Which statement best describes how an ionic bond forms?
    14·2 answers
  • Organisms that depend on other organisms for food are consumers. Which consumer think is a herbivore (eats plants only)
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!