As a mercury atom absorbs a photon ofenergy, an electron in the atom changes from
energy level d to energy level e.
Determine the energy of the absorbed photon in
electronvolts.

Answers

Answer 1

Answer:

Energy is absorbed when the electron moves from lower to higher energy level.

What is the Bohr theory?

The modern idea of quantized energy was introduced by Neils Bohr. In his theory, energy is absorbed when an electron moves from a lower to a higher energy level and energy is emitted when the object moves from a higher to a lower energy level.

The question is incomplete as the values are missing, However, energy is absorbed when the electron moves from lower to higher energy level.

Learn more about Bohr theory:brainly.com/question/11891941

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Answer 2

Answer: The energy absorbed by photon is 1.24 eV.
This is the perfect answer.

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A rectangular plate has a length of (22.4 ± 0.2) cm and a width of (8.4 ± 0.1) cm. Calculate the area of the plate, including its uncertainty.

Answers

Area of the rectangle = Length x Width
We will calculate the percentage of uncertainties.
For a length: p 1 = ( 0.2 · 100 ) : 22.4 = 20 : 22.4 = 0.893
For a width: p 2 = ( 0.1 · 100 ) : 8.4 = 10 : 8.4 = 1.190
p 1 + p 2 = 0.893 + 1.190 = 2.083 %
A = 22.4 · 8.4 = 188.16 +/- 2.083 %
Uncertainty: 188.16 · 0.02083 = 3.92
A = 188.16 +/- 3.92 cm²

The _____ theory is the most accepted theory regarding the origin of the solar system. It suggests that our star, the Sun, was first created by a cloud of dust and gas.

Answers

The Nebular Hypothesis is the most accepted explanation of the origin of our solar system. It states that the Sun was formed by a massive cloud of dust and gas light-years across, and it was bigger than the actual sun itself. Most of the mass in the center formed the sun, and the rest expanded outward.

A. Nebular is the answer

The horsepower (hp) that a shaft can safely transmit varies jointly with its speed, in revolutions per minute (rpm), and the cube of the diameter. If the shaft of a certain material 3 inches in diameter can transmit 46 hp at 100 rpm, what must the diameter be in order to transmit 74 hp at 175 rpm?

Answers

Answer:

diameter ≅ 3 inches

Explanation:

$HP=k*s*d^(3)$

Use a constant factor, k

Let Hp = horsepower

Let s = speed in rpm

Let d = diameter in inches

to find constant k, using

Hp=46

S=100

d=3 in

$46=k*100*3^(3) \n\n46=k*100*27\n46=2700k\nk=(46)/(2700) \nk=0.017\n\n$

To find diameter when;

Hp=74

S=175

k=0.017

d=d inches

$74=0.017*175*d^(3) \n\n74=2.975*d^3\nd^3=(74)/(2.975) \nd=\sqrt[3]{24.87} \nd=2.9 inches\n\n$ d≅ 3 inches

HELP PLEASE Can you say in your own words, what you think is the difference between a greenhouse gas and a non-greenhouse gas? I've been trying for a while to compare them and I'm just confused and don't know what to do

Answers

Answer:

Unlike a greenhouse, the Earth does not have a layer of glass over it. Instead, molecules in our atmosphere called greenhouse gasses absorb the heat. Greenhouse gasses include water vapor, methane, ozone, nitrous oxide, and carbon dioxide.

I've been trying for a while to compare them and I'm just confused and don't know what to do

An unbalanced force of 25 N, E, is applied to a 12-kg mass. What is the acceleration given to the mass?

Answers

Newton's second law states: $F=m*a$

F stands for force
m stands for mass
a stands for acceleration

Get a alone.

$(F)/(m)=a$ or $a=(F)/(m)$

Plug in the values you have.

$a=(25N)/(12kg)$

This gives:

$a = 2.5(m)/(s^2)E$