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
Kisachek [45]
3 years ago
12

Question 1

Physics
1 answer:
galina1969 [7]3 years ago
7 0
1/f= 1/di+1/do
1/f=1/90m+1/40m
1/f ≈27.7m
You might be interested in
PLEASEEE HELPPPP
solniwko [45]

Answer:

Explanation:

average speed more than 25.0m/s.

5 0
3 years ago
Read 2 more answers
________ in the ear change sound waves to electrical signals that the brain can interpret as sounds
Assoli18 [71]

Answer:

ear

Explanation:

7 0
3 years ago
Why do planetary scientists hypothesize that the moon formed with a molten surface
Verdich [7]

The oldest lunar rock samples are approximately 4.4 billion years old and composed of anorthosite, a mineral that crystallizes and rises to the top of a lava ocean.

5 0
4 years ago
Why a body in uniform velocity is zero acceleration ?​
seropon [69]
Uniform velocity means no Net force and therefore no acceleration. Acceleration only happens when the velocity changes.
4 0
4 years ago
What condition is necessary for the sustained flow of water in a pipe?
lianna [129]
Pressure difference (voltage)
<span />
5 0
3 years ago
Other questions:
  • What is transferred by a force moving an object through a distance?
    5·2 answers
  • How do terrestrial and giant planets differ? List as many ways as you can think of.
    9·1 answer
  • HELP ASAP <br> Describe when contact metamorphism occurs?
    9·2 answers
  • To calculate the _____ of a moving object, divide the displacement by the time interval in which the displacement occurred.
    8·2 answers
  • The two masses in the Atwood's machine shown in the figure are initially at rest at the same height. After they are released, th
    5·1 answer
  • Given that the acceleration of gravity at the surface of Mars is 0.38 of what it is on Earth, and that Mars' radius is 3400 km,
    5·2 answers
  • A simple pendulum bhas a period of 3.45s when the length of the pendulum is shortened by 1m the period is 2.81s caculate the ori
    13·1 answer
  • Question 1
    10·1 answer
  • Different between : <br>Metalloids and alloys ​
    15·2 answers
  • A convex mirror has a focal length of -13.0 cm. When you place a 6.00 cm tall pencil 60.0 cm in front of that mirror, what is th
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!