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
USPshnik [31]
2 years ago
6

which part of the microscope will be used first to adjust the focus when starting with the lowest power lens?

Physics
1 answer:
noname [10]2 years ago
7 0

The first part of the microscope that should first be used to adjust the focus when starting with the lowest power lens would be the coarse adjustment knob.

There are two knobs in a typical light microscope with which objects on slides can be brought into focus:

  1. Coarse adjustment knob
  2. Fine adjustment knob

The 2 knobs are used to adjust the stage to either bring it up towards the objective lens or down away from them. The coarse adjustment knob, however, moves the stage a considerable distance with each turn. The fine adjustment knob, on the other hand, only moves the stage very little with each turn.

The lowest power lenses are often short. Hence, using the coarse adjustment knob is ideal in order to quickly bring objects on slides into focus.

The fine adjustment knob comes highly recommended at high objectives because high objectives lenses are usually long and using the coarse adjustment knob can lead to a breakage of the slide by the lens.

More on bringing objects into focus on a microscope can be found here: brainly.com/question/24319677

You might be interested in
What are the uses of evaporative salts?
Makovka662 [10]
<span>to preserve foods, dye fabric, and DE-ice roads i hopes this helps

</span>
4 0
3 years ago
Importance of simple machines pleasecgive answer in points​
oksian1 [2.3K]

Answer:

Explanation:

The inclined plane

An inclined plane consists of a sloping surface; it is used for raising heavy bodies. The plane offers a mechanical advantage in that the force required to move an object up the incline is less than the weight being raised (discounting friction). The steeper the slope, or incline, the more nearly the required force approaches the actual weight. Expressed mathematically, the force F required to move a block D up an inclined plane without friction is equal to its weight W times the sine of the angle the inclined plane makes with the horizontal (θ). The equation is F = W sin θ.

The lever

A lever is a bar or board that rests on a support called a fulcrum. A downward force exerted on one end of the lever can be transferred and increased in an upward direction at the other end, allowing a small force to lift a heavy weight.

The wedge

A wedge is an object that tapers to a thin edge. Pushing the wedge in one direction creates a force in a sideways direction. It is usually made of metal or wood and is used for splitting, lifting, or tightening, as in securing a hammer head onto its handle.

The wheel and axle

A wheel and axle is made up of a circular frame (the wheel) that revolves on a shaft or rod (the axle). In its earliest form it was probably used for raising weights or water buckets from wells.

Its principle of operation is best explained by way of a device with a large gear and a small gear attached to the same shaft. The tendency of a force, F, applied at the radius R on the large gear to turn the shaft is sufficient to overcome the larger force W at the radius r on the small gear. The force amplification, or mechanical advantage, is equal to the ratio of the two forces (W:F) and also equal to the ratio of the radii of the two gears (R:r)

7 0
3 years ago
Explain why an egg thrown at a concrete wall will break, but an egg thrown at a sheet hanging from the ceiling will not. (Be sur
Firlakuza [10]

An egg thrown at a concrete wall will break, but an egg thrown at a sheet hanging from the ceiling will not due to high momentum and acceleration.

<h3>Why an egg thrown at a concrete wall will break?</h3>

An egg thrown at a concrete wall will break, but an egg thrown at a sheet hanging from the ceiling will not because the momentum and acceleration increases when the egg is thrown downward due to gravity but when we throw an egg in the vertical direction, they move against gravity so the momentum and acceleration decreases.

So we can conclude that an egg thrown at a concrete wall will break, but an egg thrown at a sheet hanging from the ceiling will not due to high momentum and acceleration.

Learn more about momentum here: brainly.com/question/7538238

#SPJ1

4 0
2 years ago
The amount of oxygen in the reactants is 4 atoms. In the products, the oxygen is distributed to water (H2O) and O2 gas. Which co
svp [43]

Answer:

2 in front of water and 1 in front of oxygen

Explanation:

3 0
2 years ago
Read 2 more answers
Question
MariettaO [177]
Electrical Energy to ThermalEnergy Conversions. 
1. A toaster draws electric current (electrical energy) from a wall outlet and converts these moving electriccharges into heat (thermal energy) in the filaments that turn red hot to cook your toast.

Part 2:
the law of conservation of energy states that the total energy of an isolated system in a given frame of reference remains constant—it is said to be conserved over time. Energy can neither be created nor destroyed; rather, it transforms from one form to another.

Hope I could help
source: wiki & soft schools
7 0
3 years ago
Other questions:
  • The maximum energy a bone can absorb without breaking is surprisingly small. Experimental data show that both leg bones, togethe
    5·1 answer
  • How many grams of nickel metal are plated out when a constant current of 15.0 Ais passed through aqueous NICl2 for 80.0 minutes?
    10·1 answer
  • Obesity refers to gradual weight gain as a person grows older
    8·1 answer
  • Find the work needed to lift a 20-N book 2 m.
    15·1 answer
  • The copernican model of the universe was supported by
    8·1 answer
  • A metal rod A and a metal sphere B, on insulating stands, touch each other. They are originally neutral. A positively charged ro
    10·1 answer
  • A police officer uses a radar gun to determine the speed of a car. A specialized radar gun uses ultraviolet light to determine s
    15·1 answer
  • What units are used to measure mass and weight?
    11·2 answers
  • a student places 8 similar coins in a pile . the height of the pile of coins is 2.4 cm calculate the average thickness of one co
    12·1 answer
  • Wan and Nurul sat on a see-saw. The see-saw is imbalanced because Wan’s mass is 45 kg while Nurul’s mass is only 30 kg. Suggest
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!