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
Charra [1.4K]
3 years ago
5

More than 200 years later, Albert A. Michelson sent a beam of light from a revolving mirror to a stationary mirror 15 km away. S

how that the time interval between light leaving and returning to the revolving mirror was 0.0001 s.
Physics
2 answers:
MrRissso [65]3 years ago
4 0

Explanation:

distance in meter= 15000 m

velocity of light v=3×10^8 m/s

time interval t= d/v

=\frac{15000}{ 3\times10^8}

= 0.00005 sec

This is the time for the path in one direction.  If you are looking for the time from the revolving mirror to the stationary mirror back to the revolving mirror, then it is twice the above value, which would be

2× 0.00005 =  0.0001 s

Aleks [24]3 years ago
3 0

Answer

given,

speed of light = 3 x 10⁸ m/s

distance of the mirror = 15 km

                                    = 15000 m

time interval between light leaving and returning = ?

we know,

distance = speed  x time

distance traveled by the light = 2 x 15000 = 30000 m

t = \dfrac{distance}{speed}

t = \dfrac{30000}{3 \times 10^8}

      t = 0.0001 s

hence, it is shown that the time interval is t = 0.0001 s

You might be interested in
What is the symbol for ammonium
rosijanka [135]
Symbol of ammonium is

3 0
2 years ago
A student in Denver (altitude = 1 mile = 1609 m above sea level) brings a physics book of mass 1.3 kg to the top of a ten story
Nesterboy [21]

Answer:

Explanation:

Potential energy is the energy of a body due to is virtue of rest.

Potential energy is given as mgh

g is a constant and it is 9.81m/s²

And also the mass of the body is given as 1.3kg

Now the height of the body is

He took a book to a storey building of height 26m

He still holds the book 151 cm (1.51m) above the house.

The house is on an altitude of 1609m from the sea level.

Total Ug with out the sea level is

Ug=mgh

Ug=1.3 × 9.81 ×(26+1.51)

Ug=350.84J

Then, the potential energy due to the sea level is given as

Ug=mgh

Where g = 1/6371 m/s²

Therefore

Ug=mgh

Ug=1.3 × 1/6371 ×1609

Ug=0.328J

Total energy = 0.328+350.84

Ug=351.17J

8 0
3 years ago
according to newtons first law of motion, what will an object in motion do when no external force acts on it?​
shutvik [7]

Answer:

The object will not move.

Explanation:

If nothing pushes against it it will not move. If its not on a slant it will not move.

4 0
3 years ago
Read 2 more answers
100 POINTS! I will mark brainliest! Record your hypothesis as an “if, then” statement for the rate of dissolving the compounds:
love history [14]

Answer:

<u><em>Rate of dissolving compounds:</em></u>

If we increase the temperature of the solution, then the dissolving compound would dissolve more easily.

<u><em>Boiling Point of Compounds:</em></u>

If the inter-molecular forces of any compound is really strong, then the boiling point of the compound would be really high.

6 0
3 years ago
Infer why the output force exerted by a rake must be less than input force?
adell [148]
<h3><u>Answer and Explanation</u>;</h3>
  • input force refers to the force exerted on a machine, also known as the effort, while the output force is the force machines produce or the Load. The ratio of output force to input force gives the mechanical advantage of a simple machine
  • <em><u>The output force exerted by the rake must be less than the input force because one has to use force while raking. The force used to move the rake is the input force. </u></em>
  • <em><u>The rake is not going to be able to convert all of the input force into output force, the force the rake applies to move the leaves, because of friction.</u></em>
5 0
3 years ago
Other questions:
  • What kind of stars make up the halo?
    10·2 answers
  • A positively charged rod is brought close to one end of an uncharged metal rod but does not actually touch it. What type of char
    11·1 answer
  • Explain the interaction between two charged metal objects and a change in the electric field.
    11·1 answer
  • Which will heat up fast, metal or cotton?
    5·2 answers
  • Can someone plz check if what I typed is good :)
    12·1 answer
  • The graph shows two runners participating in a race.
    6·2 answers
  • A car starts from rest and accelerates uniformly over a time of 7.25 seconds for a distance of 210 m. Determine the acceleration
    5·1 answer
  • What is the difference between biomass and fossil fuels main points?
    14·1 answer
  • N the diagram, the arrow shows the movement of electric charges through a wire connected to a battery.
    5·1 answer
  • write at least 5 sentences answering the question, "How does the height of a ramp affect the speed of an object rolling down tha
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!