1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Vika [28.1K]
3 years ago
7

Scientists use different types of microscopes to observe objects that are not visible to the naked eye. A scientist is reviewing

various samples of pond water to determine what species of microorganisms live in the pond. The scientist wishes to make drawings of the structure of each microorganism and study each one's method of movement. Which of the following microscopes would be best for the scientist to use?
a.

transmission electron microscope

b.

scanning electron microscope

c.

compound light microscope

d.

dissecting microscope
Physics
2 answers:
Alik [6]3 years ago
8 0

Answer;

-Compound light microscope

Explanation;

-A compound microscope is a microscope that uses multiple lenses to enlarge the image of a sample. It is commonly used for viewing samples at high magnification (40 - 1000x), which is achieved by the combined effect of two sets of lenses: the ocular lens and the objective lenses.

-Compound microscopes usually include exchangeable objective lenses with different magnifications (e.g 4x, 10x, 40x and 60x), mounted on a turret, to adjust the magnification. These microscopes also include a condenser lens and iris diaphragm, which are important for regulating how light hits the sample.

Travka [436]3 years ago
4 0
<span>A compound light microscope is the correct answer. Compound light microscopes provide a clear picture of many microorganisms, such as protozoans, and are used to view their structures and movements. Often, in the field of Microbiology, compound light microscopes are used for observing living microorganisms.</span>
You might be interested in
A skier (m=59.0 kg) starts sliding down from the top of a ski jump with negligible friction and takes off horizontally. If h = 3
marissa [1.9K]

Answer:

35.20 m

Explanation:

By the law of conservation of energy we have,

mg(H-h)=\frac{1}{2}mv^2

g(H-h)=\frac{1}{2}v^2

\Rightarrow H=\frac{v^2}{2g}+h

where m= mass of the skier, h= 3.00 m

D= horizontal distance=13.9 m

H= maximum height attained

Also, the horizontal distance covered by the skier is

D=vt

=v\frac{2g}{h}

\Rightarrow v^2=\frac{gD^2}{2h}

thus, height H in terms of D  is given by

H=\frac{D^2}{2h}+h

H=\frac{13.9^2}{2\times3}+3

H=35.20 m

4 0
3 years ago
In root pass welding, that electrode we are going to use?​
postnew [5]

Answer:

The root pass is made with a 5/32” (4.0mm) diameter electrode. A cellulosic electrode (E-XX10) is being used. The root pass is welded with reverse (DC+) polarity.

Explanation:

5 0
3 years ago
Helium gas at 20 °C is confined within a rigid vessel. The gas is then heated until its pressure is doubled. What is the final t
victus00 [196]

Answer:

586 K

Explanation:

Let P is the initial pressure.

Initial temperature, T₁ = 20°C = 293 K

Final pressure, P₂ = 2P

We need to find the final temperature of the gas.

The relation between the pressure and the temperature is as follows

P\propto T\\\\or\\\\\dfrac{P_1}{P_2}=\dfrac{T_1}{T_2}

Put all the values,

\dfrac{P}{2P}=\dfrac{293}{T_2}\\\\\dfrac{1}{2}=\dfrac{293}{T_2}\\\\T_2=2\times 293\\\\T_2=586\ K

So, the final temperature of the gas is 586 K.

4 0
3 years ago
A conveyer belt moves a 40 kg box at a velocity of 2 m/s. What is the kinetic energy of the box while it is on the conveyor belt
ankoles [38]
Kinwtic energy = (40kg*2*2)/2=40*2=80J
4 0
4 years ago
Read 2 more answers
Question 4 Unsaved If element X has 93 protons, how many electrons does it have? Your Answer:
9966 [12]
It have 93 electrons
8 0
4 years ago
Other questions:
  • A wind turbine is initially spinning at a constant angular speed. As the wind's strength gradually increases, the turbine experi
    13·1 answer
  • What replaces a cold current that sinks to the ocean floor?
    7·1 answer
  • How far can light travel in one year?
    11·2 answers
  • The earth system concept emphasizes which of the following? Question 2 options: how everything on the earth is interconnected ho
    15·1 answer
  • NEED HELP FAST
    10·2 answers
  • Fire that destroys the mass of the fuel that it burns<br><br> true or false
    11·2 answers
  • Define frequency in your own words
    8·1 answer
  • Abbey and Mia are in the basement playing pool. On Abbey's recent shot, the cue ball was moving east at 82 cm/s when it struck t
    14·1 answer
  • In a given system of units the ratio of the unit of volume to that of area gives the unit of​
    5·1 answer
  • How would the amount of potential energy stored in the bungee cord compare to
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!