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
PolarNik [594]
3 years ago
9

Why is the heat of fusion of any substance generally lower than its heat of vaporization?

Physics
1 answer:
Ber [7]3 years ago
3 0

The heat of fusion is always less than the heat of vaporization because at the time of the phase change from solid to liquid, the molecules only require energy to escape from the crystalline network, but it preserves the other molecular junctions.

In the case of the phase change between liquid to steam, there must be a total breakdown of that intermolecular networks and therefore apply energy so that they are not again attracted by the conditions of their environment.

You might be interested in
A dinosaur and a mammoth elephant are walking away from each other in Jurassic Park When the mammoth is at a distance that is tw
Advocard [28]

Answer: gravitational force between them will be reduced by one - fourth ( 1/4) of its initial value.

Explanation: Gravitational force between two bodies obeys inverse square law. That is, gravitational force between two bodies is inversely proportional to the square of the distance between the two bodies.

When the mammoth is at a distance that is twice the original distance, the gravitational force between them will be reduced by one - fourth ( 1/4 ) of its initial value.

5 0
4 years ago
how do you Compute the approximate acceleration of gravity for an object above the earth's surface, assigning accel gravity with
solong [7]

The approximate acceleration of gravity for an object above the earth's surface is 9.8 m/s².

<h3>Acceleration due to gravity </h3>

The acceleration due to gravity of an object above the Earth's surface is calculated from Newton's second law of motion and Newton's law of universal gravitation.

<h3>Force between the object and Earth</h3>

F_g = \frac{GmM}{R^2}

<h3>Weight of the object</h3>

F_g = mg\\

Solve (1) and (2)

mg = GmM/R²

g = GM/R²

where;

  • M is mass of Earth
  • G is gravitational constant
  • R is radius of the Earth = 6,371 km

g = (6.673 x 10⁻¹¹ x 5.98 x 10²⁴)/(6,371 x 10³)²

g = 9.8 m/s²

Learn more about acceleration due to gravity here: brainly.com/question/88039

#SPJ1

7 0
2 years ago
Generalized global air circulation and precipitation patterns are caused by
kotegsom [21]
<span> Rising, warm, moist air masses cool and release precipitation as they rise and then at high altitude, cool
and sink back to the surface as dry air masses after moving north or south of the tropics.

</span>
5 0
3 years ago
Read 2 more answers
A graduate student has done a careful analysis of the spectrum of a star. While she has found lines from many elements, there wa
disa [49]

Explanation:

The lines in the spectra of star is due to absorption of light emitted by star by different elements  present in atmosphere of the star .

If some element is present in the outer atmosphere of he star , it will absorb a particular portion of light , for which there will be black line in the spectrum .

These are called Fraunhoffer's lines .

Now there is no such line at the place of Helium in the light spectrum . This means that Helium element is not present in the outer atmosphere of the star.

7 0
3 years ago
3. A bottle of vitamin C contains 100 tablets and weighs 80 g. If the
Elan Coil [88]

Answer:

a

0.57g

b

20.52

c

28.5

Explanation:

a

The bottle weighs 80g with tablets

If the bottle alone weighs 23g, the tablets weigh 57g

100 tablets weigh 57g, 1 tablet weighs 0.57g

b

0.57g is one tablet, so to achieve 36 tablets we must multiply by 36

0.57 multiplied by 36 is 20.52

c

To find 50 tablets we can use the same method we used before or a slightly faster method

100 tablets is 57g, so all we have to do is halve to find 50

57 divided by 2 is 28.5

4 0
2 years ago
Other questions:
  • If your speech changes from 10 km/h to 6 km, you have a(n) ___ acceleration. A. negative B. Positive C. Neutral D. Oscillating
    11·1 answer
  • HELP ASAP PLEASE NEED HELP
    7·2 answers
  • What is the net force acting on a golf car travelling at a constiant speed of 5 mph?
    13·2 answers
  • Which free body diagram is in equilibrium? Question 5 options:
    12·1 answer
  • In the rainy season, the Amazon flows fast and runs deep. In one location, the river is 22 m deep and moves at a speed of 4.4 m/
    10·2 answers
  • Find the angle of incidence at which a light beam traveling from a medium having the index of refraction n1 = 2.7 to another med
    7·1 answer
  • How are the Digestive system and the Circulatory system similar?
    14·1 answer
  • The electric force is exerted by a 40-nC charged particle located at the origin of a Cartesian coordinate system on a 10-nC char
    13·1 answer
  • What is the mass of a box that accelerates to 10 m/s/s with a 70 Newton push?
    6·1 answer
  • Which of these statements best describes the relationship between elements, compounds, and pure substances? (2 points)
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!