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jenyasd209 [6]
3 years ago
8

A 2 column table with 2 rows. The first column is labeled material with entries gold, iron. The second column is labeled specifi

c heat in joules per gram degree Celsius with entries .129, .45. Which statement best describes the mass of gold and iron atoms based on their respective specific heat values?
Gold atoms are heavier than iron atoms
Iron atoms are heavier than gold atoms
Gold atoms have the same mass as iron atoms
Physics
2 answers:
topjm [15]3 years ago
8 0

Iron atoms are heavier than gold atoms

Explanation:

Chart:

 Materials            Specific heat

  Gold                       0.129

  Iron                          0.45

The specific heat of a substance is the amount of heat required to raise the temperature of 1g of the substance by 1K.

We can see that the more the mass of a substance, the higher the specific heat needed to raise the temperature.

Specific heat is directly proportional to the mass of substance.

It also dependent on the amount of heat supplied and the nature of the substance.

  • The mass of a body is the amount of substance it contains.
  • A heavier substance has more number of atoms in it.
  • Since iron has a higher specific it, the atoms must be heavier or more than that of gold.

learn more:

Specific heat brainly.com/question/7210400

#learnwithBrainly

r-ruslan [8.4K]3 years ago
5 0

Answer:

Gold atoms are heavier than iron atoms

Explanation:

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3 years ago
Which of the following statements is false?
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An excited atom can return to its ground state by absorbing electromagnetic radiation is false about the electromagnetic radiation.

Option B

<u>Explanation</u>:

In the scope of modern quantum theory, the term Electromagnetic radiation is identified as the movement of photons through space. Almost all the sources of energy that we utilize today such as coal, oil, etc are a product of electromagnetic radiation which was absorbed from the sun millions of years ago.

Various properties of electromagnetic radiations are a directly proportional relationship between the energy and the frequency, Inverse proportionality between frequency and the wavelength, etc. Hence, we can conclude that an "excited atom" can never return to its ground state by assimilating electromagnetic radiation and the 2nd statement is false.

4 0
3 years ago
Two objects with masses m and 3m are connected by a compressed spring so that the energy stored in the spring is 375 joules. If
cluponka [151]

Answer:

281.25 J

Explanation:

We are told that the two objects with masses m and 3m.

Also that energy stored in the spring is 375 joules.

Now, initially the centre of mass of the system took place at rest, it means v1 = v and v2 = v/3

Thus, from principle of conservation of energy, we have;

½mv² + ½(3m)(v/3)² = 375J

(m + 3m/9)½v² = 375

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Multiply both sides by ¾ to get;

½mv² = 375 × ¾

½mv² = 281.25 J

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7 0
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A water droplet falling in the atmosphere is spherical. Assume that as the droplet passes through a cloud, it acquires mass at a
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Answer:

it b

Explanation:

bc A water droplet falling in the atmosphere is spherical

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A body travels 10 meters during the first 5 seconds of its travel, and it travels a total of 30 meters over the first 10 seconds
Inessa05 [86]

Answer:

A body travels 10 meters during the first 5 seconds of its travel,and a total of 30 meters over the first 10 seconds of its travel

20miles / 5sec = 4miles /sec would be the average speed for the last 20 m

Explanation:

The answer is 4 m/s.

In the first 5 seconds, a body travelled 10 meters. In the first 10 seconds of the travel, the body travelled a total of 30 meters, which means that in the last 5 seconds, it travelled 20 meters (30m + 10m).

The relation of speed (v), distance (d), and time (t) can be expressed as:

v = d/t

We need to calculate the speed of the second 5 seconds of the travel:

d = 20 m (total 30 meters - first 10 meters)

t = 5 s (time from t = 5 seconds to t = 10 seconds)

Thus:

v = 20m / 5s = 4 m/s

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