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
Anastasy [175]
3 years ago
12

According to Kepler, which planet travels the fastest?

Physics
2 answers:
Gwar [14]3 years ago
4 0

The answer is "Mercury".

Stolb23 [73]3 years ago
3 0

Answer: Mercury

<u>Explanation:</u>

According to <u>second Kepler's law of planetary motion</u>:  

The line joining the planet and the sun sweeps equal areas in equal amount of time. This describes the speed of the planet.

In order to conserve momentum, the planet closest to Sun would travel fastest and planet farthest from Sun would travel slowest.

Since Mercury is the closest planet to sun, it would be fastest.

You might be interested in
In a double slit experiment, the intensity of light at the center of the central bright fringe is measured to be 6.2 µW/m2. What
-BARSIC- [3]

Answer:

   I_FWHW = 3.2 μW / m²

Explanation:

In the analysis of optics and electricity a very useful magnitude is the width at half height (FWHW) and the intensity at this height, which is given by

               I_FWHW = I₀ / 2

corresponds to the width of the line for this intensity.

In this case they give the maximum intensity for which

               I_FWHW = 6.2 / 2

               I_FWHW = 3.2 μW / m²

You do not give more data in your exercise, but the most interesting calculation is to find the angle values ​​for which you have this intensity since it is this range is 50% of the energy of the system, have I write the equation for this calculation

             I = Io cos² x₁   (sin x / x)²

             x₁ = π d sin θ /λ

             x = π b sin θ /λ

where d is the separation of the slits and b the width of each slit

5 0
4 years ago
According to the __________perspective, people who suffer from PTSD are classically conditioned.
patriot [66]

According to the pavlovian perspective, people who suffer from PTSD are classically conditioned.

<h3>What is PSTD?</h3>

This is referred to as post traumatic stress disorder which is a mental disorder from a terrifying incident.

The pavlovian perspective however view this disorder as being a type of classical conditioned one.

Read more about Post traumatic stress disorder here brainly.com/question/943079

#SPJ1

5 0
2 years ago
An 80kg sled rider starts sledding down a 100m hill from rest. If her final velocity is 15m/s, what is he acceleration down the
krok68 [10]

Given :

An 80kg sled rider starts sledding down a 100m hill from rest. If her final velocity is 15m/s.

To Find :

The acceleration down the hill.

The force needed for that kind of acceleration.

Solution :

By equation of motion :

v^2 -u^2 = 2as\\\\a = \dfrac{v^2-u^2}{2s}\\\\a = \dfrac{15^2 -0^2}{2\times 100}\\\\a = 1.125\ m/s^2

Force required is, F = ma

F = 80×1.125 N

F = 90 N

Hence, this is the required solution.

6 0
3 years ago
Neutrons incident on a heavy nucleus with spin J 0 show a resonance at an incident energy ER = 250 eV in the total cross-section
ivolga24 [154]

Answer:

elastic partial width is 2.49 eV

Explanation:

given data

ER  E = 250 eV

spin J = 0

cross-section magnitude σ = 1300 barns

peak P = 20ev

to find out

elastic partial width W

solution

we know here that

σ = λ²× W /  ( E × π × P )     ...................1

put here all value

σ = (0.286)² × W  × 10^{-16}/  ( 250 × π × 20 )

1300 × 10^{-24} = (0.286)² × W  × 10^{-16}/  ( 250 × π × 20 )

solve it and we get W

W = 249.56 × 10^{-2}

so elastic partial width is 2.49 eV

8 0
4 years ago
Q15.17 Both wave intensity and gravitation obey inverse-square laws. Do they do so for the same reason?Discuss the reason for ea
s2008m [1.1K]

(a) Intensity obeys inverse square law from basis of light passing through a given surface.

(b) Gravitation obeys inverse square law from the basis of force between two masses.

(c) The maximum magnitude of the acceleration of the block is 126.75 m/s².

<h3>What is intensity?</h3>

Intensity is the ratio is ratio of power to area of a given surface.

I = P/A (W/m²)

where;

  • P is power
  • A is area
<h3>Universal gravitation law</h3>

F = \frac{Gm_1m_2}{r^2}

Intensity and gravitation do not obey inverse square law for same reason;

  • Intensity obeys inverse square law from basis of light passing through a given surface.
  • Gravitation obeys inverse square law from the basis of force between two masses.
<h3>Acceleration of the block</h3>

a = v²/A

a = (3.9²)/0.12

a = 126.75 m/s²

Learn more about acceleration here: brainly.com/question/605631

#SPJ1

7 0
2 years ago
Other questions:
  • A quartz has an index of refraction of 1.46. Diamond has an index of refraction of 2.42. In which material does a light ray ente
    10·1 answer
  • A laser emits two wavelengths (λ1 = 420 nm; λ2 = 630 nm). When these two wavelengths strike a grating with 450 lines/mm, they pr
    13·1 answer
  • A spherical capacitor contains a charge of 3.50 nC when connected to a potential difference of 210.0 V. Its plates are separated
    11·1 answer
  • Greg is in a car at the top of a roller-coaster ride. The distance, d, of the car from the ground as the car descends is determi
    11·1 answer
  • A form of energy NOT associated with the particles of objects is
    13·1 answer
  • A student starts a stop-watch when the bob reaches to point M.He counts each time the bob changes direction and stop the watch o
    5·1 answer
  • Which instrument changes kinetic energy into electrical energy?
    8·1 answer
  • A roller coaster with a mass of 1000 kg is shot to a speed of 30 m/s in 8 seconds. How much kinetic energy does this coaster hav
    6·1 answer
  • how much force ks required.to.keep 780 n box moving at constant velocityu across.the floor if friction force betwern the bix and
    12·1 answer
  • A 808 kg automobile is sliding on an icy street. It collides with a parked car which has a mass of 632 kg. The two cars lock up
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!