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
Stells [14]
3 years ago
12

A concave lens of power -2D is placed in contact with a convex lens of power +1.5D what will be the resultant power

Physics
1 answer:
jok3333 [9.3K]3 years ago
5 0

Answer: -0.5 D

Explanation:

The resultant power can be defined as the sum of powers of all the lenses placed in contact together.

P =P₁ + P₂ + P₃ +....

It is given that power of the concave lens is, P₁ = -2 D

Power of the convex lens is, P₂ = +1.5 D

Thus, the resultant power when these two lenses are placed in contact with each other are: P = P₁ + P₂ = -2 D + 1.5 D = -0.5 D.

You might be interested in
A 1000 kg car slows down from 30 m/s to 20 m/s.<br> The change in kinetic energy will be?
goblinko [34]
1050kg sorry Ik this is not correct
6 0
3 years ago
If you apply a net force of 5N on a cart with a mass of 5 kg, show that the acceleration is 1 m/s2.
Svetlanka [38]

Answer: F = 5kg x 1 m/s2 = 5 N

Explanation:

Hi, to answer this question we have to apply the next formula:

Force (F) = mass x acceleration

Replacing with the values given and solving for F (force)

F = 5kg x 1 m/s2 = 5 kgm/s2

Since 1 Newton (N) = 1 kgm/s2

F = 5N

Feel free to ask for more if needed or if you did not understand something.  

3 0
3 years ago
Why is chemical energy a part of all chemical reactions?
lana [24]
Energy is always needed to preform anything, and chemical energy is one form of energy. Chemical energy is a part of chemical reactions because it involves teh chemicals. 

5 0
3 years ago
Read 2 more answers
Can someone help with question.
Katarina [22]

Answer:

IDK

Explanation:

IDK

5 0
3 years ago
In the article, what is the result of the conflict between the American public and the U.S. Food and Drug Administration (FDA)?
user100 [1]

Food and drug administration (FDA) is used for protecting the public health in safety, security, drugs, biological products, and medicinal devices.

Explanation:

The U.S food and Drug Act  tells about the sale of misbranded or adulterated food and drugs in interstate commerce and had a foundation for the nation's first consumer protection agency.

The federal law is passed to establish the quality standards for foods, drugs and medical devices manufactured and sold in U.S.

This act has a new consumer protection against unlawful cosmetics and medical devices and enhances the government's ability to enforce the law. The main goal of FDA is to make food and drug safe for public consumption.

4 0
3 years ago
Other questions:
  • Identifying Advantages of Parallel Circuits
    15·2 answers
  • what is the amplitude and wavelength of the wave shown below? A. Amplitude: 15 cm; wavelength: 150 cm B. Amplitude: 30 cm; wavel
    12·2 answers
  • A racing car can complete an 800 m long lap in 14 s. What is the speed of the<br> car?
    6·1 answer
  • A diagnostic sonogram produces a picture of internal organs by passing ultrasound through the tissue. In one application, it is
    11·1 answer
  • A scientist compares two samples of white powder. One powder was present at the beginning of an experiment. The other powder was
    10·1 answer
  • A 2-kg bowling ball is 1 meter off the ground on a post when it falls just before it reaches ground it is travelling 4.4 m/s ass
    14·2 answers
  • It took 50 joules to push a shopping cart 5 meters.with what face was the shopping cart pushed?
    6·1 answer
  • Donna and Dave were participating in a lab on the properties of water. First, they tried to see how many drops of water they cou
    14·1 answer
  • Find the cross-sectional area.
    7·1 answer
  • Which is closely related to a whale? a shark, a toad, an alligator, a penguin or a bat?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!