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
bixtya [17]
2 years ago
14

When a burning stick of increase is moved fast in a circle a circle of red light is seen.​

Physics
1 answer:
anzhelika [568]2 years ago
7 0

Answer:

The impression of the image on the retina lasts for about 1/16th of a second after the removal of the object. If a burning stick of incense is revolved at a rate of more than sixteen revolutions per second, we see a circle of red light due to persistence of vision.

Explanation:

You might be interested in
You should always wear your seat belt just in case the car comes to an abrupt stop. The seat belt will hold you in place so that
Gwar [14]
Newtons 1st law of motion states that the object will continue to move at its present speed and direction until an outside force acts upon it.
 
So unless the objects inside the car are restrained, they will continue moving at whatever speed the car is traveling at, even if the car is stopped by a crash.

5 0
3 years ago
Read 2 more answers
Calculate the momentum of a 6 kg rock that is rolling down a hill with a velocity of 4 m/s.
Leokris [45]

Answer:

24kgm/s

Explanation:

momentum(p)=mass×velocity

=6×4

=24 kgm/s

4 0
3 years ago
From the lens equation calculate the position of the following images produced by a convex lens.
fiasKO [112]

Explanation:

(i)

O is the object and I is the image.

The image formed is enlarged and it is erect. So the magnification will be positive (+) and greater than 1.

Refer above image. 1

(ii)

O is the object and I is the image.

The image formed is diminished and erect. So the magnification will be positive (+) and less than1.

Refer above image. 2

(iii)

The image will be formed as the 2F on the other side of the lens and it will be of same of the object.

5 0
3 years ago
By counting the number of waves that pass a certain point each second, we will know the _______ of the wave.
Travka [436]
The answer is A. Frequency
6 0
3 years ago
Read 2 more answers
The diver uses compressed air to breathe under water. 1700 litres of air from the atmosphere is compressed into a 12-litre gas c
ivann1987 [24]

Answer:

The answer is below

Explanation:

A diver works in the sea on a day when the atmospheric pressure is 101 kPa. The diver uses compressed air to breathe under water. 1700 litres of air from the atmosphere is compressed into a 12-litre gas cylinder. The compressed air quickly cools to its original temperature. Calculate the pressure of the air in the cylinder.

Solution:

Boyles law states that the volume of a given gas is inversely proportional to the pressure exerted by the gas, provided that the temperature is constant.

That is:

P ∝ 1/V;   PV = constant

P₁V₁ = P₂V₂

Given that P₁ = initial pressure = 101 kPa, V₁ = initial volume = 1700 L, P₂ = cylinder pressure, V₂ = cylinder volume = 12 L. Hence:

P₁V₁ = P₂V₂

100 kPa * 1700 L = P₂ * 12 L

P₂ = (100 kPa * 1700 L) / 12 L

P₂ = 14308 kPa

6 0
2 years ago
Other questions:
  • Hey guys I really really need help with this question for ASAP! Explain what chart junk is and how it differs from the kind of i
    13·2 answers
  • Consider that a ray of light is travelling from glass to water. The refractive index of water is 1.30 (i e n . ., 1.30 w = ) and
    14·1 answer
  • Strontium has how many neutrons
    11·2 answers
  • When humans look at the sky, it appears blue, but the Sun appears yellow. What causes this phenomenon?
    7·2 answers
  • Use the periodic table to complete this equation that represents the process of nuclear fusion.
    8·3 answers
  • A positive charge moves in the direction of an electric field. Which of the following statements are true? Check all that apply.
    6·2 answers
  • Answer the following questions based on the
    15·2 answers
  • An object has positive velocity and negative acceleration, what does this mean?
    5·1 answer
  • I want you to think about each of these scenarios, what do you think will happen after? I just want you to think about it, and w
    10·1 answer
  • If the mass of the cement is 15 000 kg, calculate the density of this cement sample in kgm-3
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!