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3 years ago

The change of an atom from the excited state to the ground state always requires _______

Physics

1 answer:

lawyer [7]3 years ago

8 0

Answer: emission of electromagnetic radiation

Explanation:

When an atom is in its <u>ground state</u>, its electrons fill the lower energy orbitals completely before they begin to occupy higher energy orbitals.

On the other hand, when an atom is <u>excited (</u>it has left its ground state, in which each electron occupies its place in its orbit, around the nucleus), some electron jumps out of the orbit it occupied in its fundamental state to an outer orbit, further away from the nucleus and then return to the ground state, emitting in the form of electromagnetic radiation (light which may be visible or not) the energy received.

So, when an excited electron passes from an outer orbit to the ground state, it produces electromagnetic radiation of a specific wavelength that depends on the amount of energy the electron releases in the process.

Therefore:

<h3>The change of an atom from the excited state to the ground state always requires <u>the emission of electromagnetic radiation.</u></h3>

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Which type of protein adds a phosphate group to another molecule?

7nadin3 [17]

Answer:

Kinase Enzyme

Explanation:

Kinase is an enzyme that catalyzes a biochemical reaction where it transfers phosphate groups from high-energy, phosphate-donating molecules to specific substrates. This process is known as phosphorylation. During phosphorylation, the substrate gains a phosphate group and the high-energy ATP molecule donates a phosphate group.

Kinases belong to the enzyme family of phosphotransferases. Kinases are different from phosphorylases, as the latter catalyzes the reaction where inorganic phosphate is added to the substrate. Therefore, kinases are essential enzyme in human physiology.

8 0

3 years ago

if A and B are non zero vectors, is it possible for vector A×vector B and vector A.vector B both to be zero? Justify your answer

DedPeter [7]

Answer:

not able to understand the question

3 0

3 years ago

Consider a book that weighs 15 N at rest on a flat table. How many newtons of support does the table provide?

zysi [14]

<span>The support force is 15 N. The net force on the book is zero.</span>

7 0

3 years ago

You measure a watch's hour and minute hands to be 7.4 mm and 12.1 mm long, respectively. Part A In one day, by how much does the

pychu [463]

Answer:

109.385m

Explanation:

In 1 day, the hour hand travels 2 circles, or 4π rad in angular. The distance it travels is its angle times the radius

7.4 * 4π = 93 mm

In 1 day, the minute hand travels 24*60 = 1440 circles, or 1440 * 2π = 2880π rad in angular. The distance it travels is

12.1 * 2880π = 109478 mm

So the distance traveled by the tip of the minute hand that exceed the distance traveled by the tip of the hour hand is

109478 - 93 = 109385 mm or 109.385 m

3 0

4 years ago

100 POINTS. PLEASE EXPLAIN

Elina [12.6K]

Answer:

(a) 106 kPa

(b) 0.0377 mol

Explanation:

(a) There are three forces on the piston. Atmospheric pressure pushing down, weight pulling down, and pressure of the gas pushing up.

∑F = ma

PA − mg − PₐA = 0

P = (PₐA + mg) / A

P = Pₐ + (mg / A)

P = 101,300 Pa + (40.0 N) / (π (0.05 m²))

P = 106,393 Pa

P = 106 kPa

(b) Use ideal gas law.

PV = nRT

(106,393 Pa) (π (0.05 m²) (0.11 m)) = n (8.314 Pa m³/mol/K) (20 + 273.15) K

n = 0.0377 mol

PV = nRT

(106,393 Pa) (π (0.05 m²) h) = (0.0377 mol) (8.314 Pa m³/mol/K) (200 + 273.15) K

h = 0.178 m

h = 17.8 cm

6 0

4 years ago

Read 2 more answers