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
Elenna [48]
2 years ago
12

Which lens combination is used to treat presbyopia ~ ​

Physics
1 answer:
abruzzese [7]2 years ago
8 0

Answer:

People with presbyopia require a convex lens for reading glasses; specialized preparations of convex lenses usually require the services of an optometrist

You might be interested in
If little herbert does something uncon<br> sciously he will probably
snow_tiger [21]

If little herbert does something unconsciously he will probably, he's definitely very unware of he has done

Doing something unconscious may have some implications which may not be favourable.

<h3>What is unconscious?</h3>

Unconscious simply means a state of someone being absent minded of what is happening to him or her at a particular period of time

So therefore, if little herbert does something unconsciously he will probably, he's definitely very unware of he has done

Complete question:

What happens if little herbert does something unconsciously he will probably

Learn more about unconscious:

brainly.com/question/11747612

#SPJ1

5 0
2 years ago
Which of the following most accurately describes the development of the antibiotic penicillin?
I am Lyosha [343]

Answer:

C.) Fleming shows that the Penicillium mood could kill bacteria and observed that it was very effective when taken orally or intravenously

7 0
4 years ago
Read 2 more answers
An ideal gas in a sealed container has an initial volume of 2.50 L. At constant pressure, it is cooled to 21.00 ∘C, where its fi
goblinko [34]

<u>Answer:</u> The initial temperature of the system comes out to be 147 °C

<u>Explanation:</u>

To calculate the initial temperature of the system, we use the equation given by Charles' Law. This law states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.

Mathematically,

\frac{V_1}{T_1}=\frac{V_2}{T_2}

where,

V_1\text{ and }T_1 are the initial volume and temperature of the gas.

V_2\text{ and }T_2 are the final volume and temperature of the gas.

We are given:

V_1=2.50L\\T_1=?K\\V_2=1.75L\\T_2=25^oC=(25+273)K=294K

Putting values in above equation, we get:

\frac{2.50L}{T_1}=\frac{1.75L}{294K}\\\\T_1=420K

Converting the temperature from kelvins to degree Celsius, by using the conversion factor:

T(K)=T(^oC)+273

420=T(^oC)+273\\T(^oC)=147^oC

Hence, the initial temperature of the system comes out to be 147 °C

6 0
4 years ago
What current is used to power the United States power grid?
alexdok [17]
The answer is Alternating Current
3 0
3 years ago
Read 2 more answers
In terms of positive and negative charges what causes lightning?
erik [133]

Answer:

Electrostatic Discharge during the equalization of the separated positively and negatively charged electrostatic charges in the storm clouds.

Explanation:

In nature, lightning occurs during the discharge of the large charges contained in the separated positively and negatively particles in the atmosphere in the process equalizing (neutralizing) of the charges, leading to the release of instantaneous energy in the form of heat, light and sound

During a storm, as the clouds mixes by the wind with different densities, they rub each other forming electrostatic charges. The lighter positively charged particles rise to the top clouds while the heavier negatively charged particles move to the bottom. The charges continue to add up to a point where their magnitudes is large enough such that a big spark or lightening occurs between the positive and negative charges during the process of re-equalization of the charges to revert to neutrality.

7 0
3 years ago
Other questions:
  • The water level in a tank is 18 m above the ground. A hose is connected to the bottom of the tank, and the nozzle at the end of
    6·1 answer
  • Which is a characteristic of a step–down transformer?
    10·1 answer
  • A small car of mass 837 kg is parked behind a small truck of mass 1606 kg on a level road. The brakes of both the car and the tr
    6·1 answer
  • What is the time it takes a pig to roll a distance of 6 m at a speed of 8 m/s? 0.7 m/s
    11·1 answer
  • →Fo
    13·2 answers
  • A 15 foot ladder is leaning against a wall of a house. The base of the ladder is pulled away from the wall at a rate of 3 ft/sec
    12·1 answer
  • The four balls in the diagram below are made of the same material are sold
    12·1 answer
  • Hallar la energía mecánica de un pendulo , en un punto de su oscilación donde la energía cinética es 0,39 J y en ese mismo punto
    11·1 answer
  • Do children under the age of 13 that have social media accounts have more behavior problems in school? What is the independent v
    8·1 answer
  • What property of a mineral is
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!