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
8

5. If the power of a lens- 2 D, what is its focal length?​

Physics
1 answer:
alexandr1967 [171]3 years ago
8 0

Answer: Power of a lens is -2D, negative sign indicates it is a Concave lens. Focal length (in meters)=1/power of the lens, thus focal length=1/2=0.5m=50cm.Jul 6, 2019

You might be interested in
? What is the difference between the Primitive cell and convectional cell
dybincka [34]
The above answer is correct!
8 0
3 years ago
Convertir en utilisant les puissances de 10
kirza4 [7]

Explanation:

Bonjour , pourriez-vous m'aider à faire cet exercice svp ??

a) Convertir les longueurs suivantes en utilisant les puissances de 10.

1,7 cm en mètre

0,48 km en mètre

49 mm en mètre

35 m en centimètre

63 km en mètre

568 Mm en kilomètre

b) Ecrire les longueurs ainsi converties en utilisant la notation scientifique

4 0
3 years ago
A string is waved up and down to create a wave pattern with a wavelength of 0.5 m. If the waves are generated with a frequency o
GrogVix [38]

Wave speed = (wavelength) x (frequency)

Wave speed = (0.5 m) x (2 /sec)

<em>Wave speed = 1 m/s</em>

4 0
3 years ago
John attaches a ball to a spring. The diagram below shows what happens. Which option shows the direction of the force of the bal
Vika [28.1K]
The answer is downwards because the ball is pulling down the spring due to its weight
8 0
3 years ago
Read 2 more answers
A brick is dropped from 100m up. Find it's impact velocity and air time.
ivann1987 [24]
The airtime is 9.8
the velocity is 0
4 0
3 years ago
Other questions:
  • An organism ingests a toxin that damages the mitochondria of its cells.
    13·1 answer
  •  Which of the following levels of classification is the least specific?
    9·1 answer
  • What measures wind speed?
    7·2 answers
  • Hierarchy is a principle of visual design. It allows designers to show the viewer which objects are most important.
    6·1 answer
  • A car has a mass of 1600 kg. It is stuck in the snow and is being pulled out by a cable that applies a force of 7560 N due north
    13·1 answer
  • Driving a motor vehicle is a. A. The constitutional right of every citizen. B. The privilege. C. The law
    5·2 answers
  • What is the equivalent resistance of the circuit?
    15·1 answer
  • What is the first sign of dehydration? What is the first sign of dehydration?
    11·2 answers
  • Which of the following indicates a heat transfer?
    11·1 answer
  • A current-carrying ohmic metal wire has a cross-sectional area that gradually becomes smaller from one end of the wire to the ot
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!