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3 years ago

Explain and describe how the photoelectric effect occurs on an atomic level in terms of protons, neutrons, and electrons

Chemistry

1 answer:

grin007 [14]3 years ago

3 0

Answer:

The photoelectric effect is the emission of electrons when electromagnetic radiation, such as light, hits a material. Electrons emitted in this manner are called photoelectrons.

Based on the wave model of light, physicists predicted that increasing light amplitude would increase the kinetic energy of emitted photoelectrons, while increasing the frequency would increase measured current.

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Even though ozone may be dangerous to our health here on Earth, how can it be beneficial in the upper atmosphere?

Annette [7]

Answer:

It absorbs ultraviolet (UV) radiation from the sun.

Explanation:

Excess UV radiation damages DNA, causing malignant skin cancers.

The ozone in the upper atmosphere is beneficial because it absorbs much of this harmful radiation.

5 0

4 years ago

Feeding levels within an ecosystem are

alisha [4.7K]

Answer:

C. trophic levels

Explanation:

Trophic levels are the feeding positions of all organisms in a specific ecosystem. There are five main trophic levels, or feeding levels.

-----------

Habitats are the environment in which organisms live. They are not feeding levels.

Taxonomic levels are a way of classifying species. They consist of (in order) domain, kingdom, phylum, class, order, family, genus, and species. They are not feeding levels.

Cladograms are branching diagrams that show the relationship between multiplt organisms/species. It too is not a feeding level.

Thus, is answer is C.

hope this helps!

3 0

2 years ago

A table has several directional compasses, several lengths of wire, a battery, an ammeter, a light bulb, a battery holder and a

lubasha [3.4K]

<span>C) A permanent magnet
Reactivate</span>

5 0

3 years ago

Read 2 more answers

What happens when two objects when they are brought closer together The mass of both objects decrease The mass of both objects i

Maurinko [17]

Answer:

The correct option is

The gravitational force between them increases

Explanation:

According to Newton's law of universal gravitation states that the force of attraction between two bodies is directly proportional to the product of the masses of the bodies and inversely proportional to the square of the distance of their centers from each other.

The formula for universal gravitation is given as follows;

$F_{1} = F_{2} =G \times \dfrac{m_{1} \times m_{2}}{r^{2}}$

Where;

F₁, and F₂ = The gravitational forces of attraction on each mass

G = The gravitational constant

m₁ = The mass of one body

m₂ = The mass of the body

r = The distance between the centers of the two bodies

Therefore, the gravitational force of attraction on each object is inversely proportional to the as the distance between the centers of the two bodies

When the distance between the centers of the two bodies decreases, the two objects are brought closer together, the gravitational force of attraction between them increases.

8 0

3 years ago

What is the overall cell potential for this redox reaction? Cd + Hg22+ → Cd2+ + 2Hg Given: Cd2+ + 2e− → Cd(s) = –0.40 and Hg22+

Hoochie [10]

Answer: 1.19 V

Explanation:

Standard potential for an electrochemical cell is given by:

$E^0{cell}$ = standard electrode potential = $E^0{cathode}-E^0{anode}$