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
kodGreya [7K]
2 years ago
9

A 20-cm-diameter disk emits light uniformly from its surface. 40 cm from this disk, along its axis, is a 16.0-cm-diameter opaque

black disk; the faces of the two disks are parallel. 40 cm beyond the black disk is a white viewing screen. The lighted disk illuminates the screen, but there's a shadow in the center due to the black disk. What is the diameter of the completely dark part of this shadow
Physics
1 answer:
Marianna [84]2 years ago
7 0

Answer:

132

Explanation:

if you round it is correct

You might be interested in
Define inertia, give its classification. ​
strojnjashka [21]

Answer:

The tendeny  of a body to continue its state either motion or rest is called inertia . First  law of newton also called law of inertia .

There are three types of inertia  

1. Motion inertia

2. Rest inertia

3. Directional inertia

Explanation:

Mark brainliest if you undersand

7 0
2 years ago
Nuclear energy is the energy stored in the of an atom. t/f
Shtirlitz [24]
In nuclear fission, atoms are split to release the energy. A nuclear reactor, or power plant, is a series of machines that can control nuclear fission to produce electricity. The fuel that nuclear reactors use to produce nuclear fission is pellets of the element uranium. So it would be false.
3 0
2 years ago
Read 2 more answers
Arif has recently quit smoking. What benefit can he expect to occur within a few hours of quitting?
kodGreya [7K]
For one you’ll smell better, won’t be thinking when can i get my next cigarette, stop lung damage, skin will start to clear up
5 0
2 years ago
Read 2 more answers
Hydrogen is an example of a<br> 1<br> A.metal<br> B.noble gas<br> C.nonmetal<br> D.metalloid
miskamm [114]

Answer:

Hydrogen is a nonmetal.

Explanation:

To be assure look at the periodic

table and the groups

5 0
3 years ago
The distance between a seismic station and the earthquake epicenter is determined from the ____.
Naya [18.7K]
This number will be used to tell you how far your seismograph is from the epicenter of<span> the </span>earthquake!<span> Waves are 24 secs apart
Lol, i study. I hope it helps ya!</span>
6 0
3 years ago
Read 2 more answers
Other questions:
  • What is the momentum of a 35–kilogram cart moving at a speed of 1.2 meters/second?
    9·1 answer
  • A 0.55-kg ball, attached to the end of a horizontal cord, is revolved in a circle of radius 1.3 m on a frictionless horizontal s
    7·1 answer
  • A proton moves in a circular path perpendicular to a constant magnetic field. If the field strength of the magnet is increased,
    13·1 answer
  • F = 3e8 divided by 6.56E-9 NO ANSWERS?
    13·1 answer
  • if the input force on a wheel and axle is 2 N and the output force is 20N what is its mechanical advantage
    8·1 answer
  • Select all that apply.
    7·2 answers
  • Who is the founder of pelincilin​
    12·1 answer
  • Why is temperature scalar?
    11·1 answer
  • Calculate the force needed to bring a 1,019-kg car to rest from a speed of 29 m/s in a distance of 118 m
    12·1 answer
  • What happened to the balloon when it was placed on the bottle with the baking soda and vinegar and why
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!