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
Aliun [14]
3 years ago
11

Two competing models attempt to explain the motions and changing brightness of the planets: Ptolemy's geocentric model and Coper

nicus' heliocentric model.
Sort the characteristics according to whether they are part of the geocentric model, the heliocentric model, or both solar system models.

Drag the appropriate items to their respective bins.

Epicycles and deferents help explain planetary motion.
Planets move in circular orbits and with uniform motion.
The brightness of a planet increases when the planet is closest to Earth.
This model is Earth-centered.
This model is Sun-centered.
Retrograde motion is explained by the orbital speeds of planets.
Retrograde motion is explained by epicycles.
Epicycles and deferents help explain planetary motion. Selected

Dragable

Geocentric:

Heliocentric:

Both geocentric and heliocentric:
Physics
1 answer:
Ivanshal [37]3 years ago
6 0

Geocentric:

-The model is Earth centered

-Retrograde motion is explained by epicycles.

Heliocentric:

-This model is Sun-centered.

-Retrograde motion is explained by the orbital speeds of planets.

Both geocentric and heliocentric:

-Epicycles and deferents help explain planetary motion.

-Planets move in circular orbits and with uniform motion.

-The brightness of a planet increases when the planet is closest to Earth.

You might be interested in
Near to the point where I am standing on the surface of Planet X, the gravitational force on a mass m is vertically down but has
Gelneren [198K]

Answer: V = sqrt(2¥h^3)/3

Explanation:

8 0
3 years ago
The scale on the horizontal axis is 8 s per division and on the vertical axis 5 m per division. What is the time represented by
Nadya [2.5K]

Answer:

24 s

Explanation:

8 s / tic    *    3 tic = 24 sec from origin

8 0
2 years ago
How many excess electrons must be present on each sphere if the magnitude of the force of repulsion between them is 4.57×10−21 n
hichkok12 [17]

Answer:

891 excess electrons must be present on each sphere

Explanation:

One Charge = q1 = q

Force = F = 4.57*10^-21 N  

Other charge = q2 =q

Distance = r = 20 cm = 0.2 m  

permittivity of free space = eo =8.854×10−12 C^2/ (N.m^2)  

Using Coulomb's law,

F=[1/4pieo]q1q2/r^2

F = [1/4pieo]q^2 / r^2

q^2 =F [4pieo]r^2

q =  r*sq rt F[4pieo]

 q=0.2* sq rt[ 4.57 x 10^-21]*[4*3.1416*8.854*10^-12]

q = 1.42614*10^ -16 C

number of electrons = n = q/e=1.42614*10^ -16 /1.6*10^-19

n =891

 891 excess electrons must be present on each sphere  

5 0
3 years ago
what is the initial velocity of a go-kart traveling at a uniform acceleration of 0.5 m/s^2 for 5s as it slows down to a stop?​
timurjin [86]

The initial velocity of go-kart is 2.5 m/s.

<u>Explanation:</u>

Here, the uniform acceleration of go-kart is given as 0.5 m/s². Also the time required by it to stop is also given as 5 s. As acceleration is the measure of change in velocity per unit time.

In this case, the velocity should be changed from a value to zero to come to rest. So the initial velocity will be positive value and final velocity is zero.

As we know the values of acceleration, final velocity and time, the initial velocity can be easily determined as follows.

Acceleration = \frac{Final velocity -Initial velocity}{Time}

Since, final velocity is zero, acceleration is 0.5 m/s² and time is 5 s, then,

        -0.5=\frac{-\text {Initial velocity}}{5}

        Initial velocity = 0.5 × 5 = 2.5 m/s.

So the initial velocity of go-kart is 2.5 m/s.

8 0
3 years ago
Set up a parallel circuit with three resistors. Set up the battery to be 9 V, one resistor at 10 Ohms, the other at 21 Ohms, and
valina [46]

In a parallel circuit, the equivalent resistance is the reciprocal of (the sum of the individual reciprocals).

1/R = 1/10 + 1/21 + 1/13

1/R = 0.225 mhos

R = 4.45 ohms

I = V / R

The total current out of the battery is

I = (9v)/(4.45ohms)

I = 2.02 Amperes

As the total current leaves the battery, it splits into 3 paths, and each resistor gets part of it. The 10ohm resistor gets the most current; the 21ohm resistor gets the least current. After flowing through the resistors, the 3 currents join and add up to 2.02 Amperes again, and the same current returns to the battery.

Each resistor has the same 9v of EMF across it.

4 0
3 years ago
Other questions:
  • % = Wo/Wi x 100 Solve for Wo<br> % = Wo/Wi x 100 Solve for Wi
    7·1 answer
  • A skier (m=59.0 kg) starts sliding down from the top of a ski jump with negligible friction and takes off horizontally. If h = 3
    6·1 answer
  • At which dew point temperature would the amount of water vapor in the air be greatest
    9·1 answer
  • The pfsense firewall, like other firewalls on the market, relies on __________ to expose an ip address from the private network
    12·1 answer
  • What effects would you expect if red blood cells were shaped like neurons
    9·2 answers
  • A sled whose total mass with cargo is 30.0 kg rests on ice. The coefficient of static friction is 0.20 and the coefficient of ki
    11·1 answer
  • The ratio of present ages of sunanya
    6·1 answer
  • If you had a string tied firmly to a post, and you created a wave that went down the string, why do you think would happen as th
    14·1 answer
  • A child has a toy balloon with a volume of 1.80 L. The temperature of the balloon when it was filled was 20.ºC and the pressure
    11·1 answer
  • Click to review the online content. Then answer the question(s) below, using complete sentences. Scroll down to view additional
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!