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kompoz [17]
3 years ago
12

Why does a microscope stage have a small hole in it?

Chemistry
1 answer:
jarptica [38.1K]3 years ago
4 0
Answer: B. Allow light to pass through. :)
You might be interested in
What is the ground state electron configuration for magnesium?
Stella [2.4K]
Magnesium :

<span>[Ne] 3s²</span>

Answer A

hope this helps!

5 0
3 years ago
You identify a molecule in a pizza that is a polymer; has oxygen, hydrogen, and sulfur atoms; and is hydrophilic. What kind of m
matrenka [14]

The kind of molecule in this pizza is a protein because it is a polymer, <u>hydrophilic</u>, and it's made up of oxygen, hydrogen, and sulfur atoms.

<h3>What is an amino acid?</h3>

An amino acid refers to a simple and organic chemical compound that consist of an acidic carboxyl group (COOH), a basic amino group (NH_2), and a unique side chain group.

<h3>What is a protein?</h3>

A protein can be defined as a <u>hydrophilic</u>, macromolecule (polymer) that is formed as a result of the union of many amino acids.

Generally, a protein contains the following chemical elements:

  • Oxygen (O) atoms
  • Hydrogen (H) atoms
  • Sulfur (S) atoms

In conclusion, the kind of molecule in this pizza is a protein because it is a polymer, <u>hydrophilic</u>, and it's made up of oxygen, hydrogen, and sulfur atoms.

Read more on protein here: brainly.com/question/19145247

4 0
2 years ago
Which of the following correctly describes the general process of coal mining and refining? Select one: a. Coal is mined, washed
e-lub [12.9K]

The general process for coal mining and refining is option C.

Coal mining is carried out by two main processes based on the depth, quality, thickness, and structure of coal seam. Based on the depth, coal seam of less than 180ft to the surface is surface mined while coal seems between 180ft.-300ft. are deep mined. The coal mined is transported to a nearby processing plant using a conveyor, train, ship, etc. where it is washed to remove other component like dirt, sulphur, rocks, etc. and afterwards dried.

4 0
3 years ago
A fan blade rotates with angular velocity given by ωz(t)= γ − β t2, where γ = 5.20 rad/s and β = 0.810 rad/s3 . calculate the an
Gnesinka [82]

Answer : The angular acceleration is \alpha=-\beta t=-0.810\text{ t}

Solution : Given,

\gamma=5.20rad/s

\beta=0.810rad/s^3

The given angular velocity equation is,

\omega_z(t)=\gamma-\beta t^2

At t = 0,    \omega_z(0)=\gamma

At t = t,      \omega_z(t)=\gamma-\beta t^2

Angular acceleration : It is defined as the rate of change of angular velocity with respect to time.

Formula used for angular acceleration :

\alpha=\frac{\omega_z(t)-\omega_z(0)}{t}

where,

\alpha = angular acceleration

\omega_z(t) = angular velocity at time 't'

\omega_z(0) = angular velocity at time '0'

t = time

Now put all the given values in this formula, we get the angular acceleration.

\alpha=\frac{(\gamma)-(\gamma-\beta t^2)}{t}

\alpha=-\beta t=-0.810\text{ t}

Therefore, the angular acceleration is \alpha=-\beta t=-0.810\text{ t}

5 0
3 years ago
Which letter? Thanks in advance!
Mashcka [7]

Answer: b

Explanation:

7 0
3 years ago
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