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uranmaximum [27]
3 years ago
7

Three terms in planetary science sound similar but have different meanings.Fill in the blanks below with the correct term. Impor

tant: Spelling matters! Use only lowercase! a. A solar_________ occurs when the Moon passes across the disk of the Sun. b. An___________ describes the shape of a planetary orbit about the Sun.c. The____ describes the path of the Sun as seen against the background stars.
Physics
1 answer:
sweet [91]3 years ago
7 0

Answer:

Three terms in planetary science sound similar but have different meanings.Fill in the blanks below with the correct term. Important: Spelling matters! Use only lowercase! a. A solar eclipse occurs when the Moon passes across the disk of the Sun. b. An ellipse describes the shape of a planetary orbit about the Sun.c. The ecliptic describes the path of the Sun as seen against the background stars.          

Explanation:

When the moon places between the Earth and the Sun, a solar eclipse occurs. The moon is capable to hide the solar disk, even with the sun being 400 times bigger than the moon but the moon is 400 times closer to the Earth than the sun.      

Kepler's first law establishes that all the planets revolve around the Sun in an ellipse orbit, with the sun in one of the focus.

The ecliptic is the apparent path that the sun has in the celestial sphere as a consequence of the daily movement of the Earth around its axis      

                         

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Two cars approach each other; both cars are moving westward, one at 85 km/h, the other at 54 km/h. what is the magnitude of the
Anna007 [38]
Good afternoon.

In the reference of the second car, itself is stopped! It is the same thing as adding the opposite speed vector of this car to the rest of the world. See below:

Begginning:

    Car 1                  Car 2 
 → 85 km/h              → 54 km

Going to the referential of car 2, adding ← 54 km/h to both cars:


New Reference:

Car 1                                      Car 2
(→85 km/h) + (←54 km/h)       (→ 54 km/h) + (← 54 km/h)

Car 1                     Car 2
→ 31 km/h               0 km/h


So, relative to car 2, car 1 has a velocity of<em> 31 km/h</em>
4 0
3 years ago
How many elemens are listed in the periodic table
Vesnalui [34]
118 elements
from what knowledge i have gathered in my human brain i hope that this is helpful
5 0
4 years ago
Read 2 more answers
A satellite is in elliptical orbit with a period of 7.20 104 s about a planet of mass 7.00 1024 kg. At aphelion, at radius 5.1 1
soldi70 [24.7K]

Answer:

1.64x10^{-4}rad/s

Explanation:

Given:

satellite is in elliptical orbit with a period T= 7.20 x 10^{4} s

Mass of planet m=  7.00x 10^{24} kg

Satellite's angular speed ωa- = 4.987 10-5 rad/s

At aphelion, at radius Ra= 5.1 x 10^7 m

Assuming torque is zero for this system, therefore, the conservation of angular momentum can be defines as

Lp = La

Ip ωp = Ia ωa--->eq(1)

Where,

'a' represents aphelion and 'p' represents perihelion

ω represents  angular velocity

and I represents the rotational inertia

Since, I= 1/2 mR²

Here R is the radius at  aphelion /  perihelion

m = mass of planet

eq(1)=> ωp= Ia ωa/ Ip

ωp= (1/2 m Ra² ωa) / 1/2 m Rp²

ωp= (Ra/Rp)² ωa --->eq(2)

In order to find Rp, we use : 2a= Rp + Ra

where a represents semimajor axis

with the help of Kepler's third law for elliptical orbits

a= ∛(GmT²/4π²)

a= ∛ 6.67x 10^{-11} x 7.00x 10^{24} x (7.20 x 10^{4})² / 4π²

a=  3.97 x 10^{7}m

2a= Rp + Ra

Rp= 2a-Ra

Rp= 2 x 3.97 x 10^{7}-  5.1x 10^{7}

Rp= 2.84 x 10^{7}m

Substituting all the required values in eq 2, we have

ωp= (Ra/Rp)² ωa

ωp= (5.1x 10^{7}/2.84 x 10^{7})² x  4.987 x 10^{-5

ωp= 3.224 x 4.987 x 10^{-5

ωp= 1.64x10^{-4}rad/s

Therefore, angular speed at perihelion is 1.64x10^{-4}rad/s

3 0
3 years ago
Can track storms at different altitudes
OlgaM077 [116]

<em><u>The radars, weather satellites and the several highly accurate barometers are used to track the different storms at different altitudes. </u></em>

Further Explanation:

The storms at different altitudes are generated due to pressure variation in the different regions of the air. This pressure variation in the air is the main cause of the formation of the storms.

These storms can be easily tracked by means of the Radars and other weather forecasting satellites which keep a track of the variation in the trends of the pressure and temperature in the particular regions.

The trends of the strength of the winds can also predict a lot about the direction of motion of the winds. The highly accurate barometers are used to measure the strength of the storms originating at the different altitudes.

Thus, <em><u>the radars, weather satellites and the several highly accurate barometers are used to track the different storms at different altitudes. </u></em>

<em><u> </u></em>

Learn More:

1. Forces of attraction limit the motion of particles most in brainly.com/question/947434

2. The amount of kinetic energy an object has depends on its brainly.com/question/137098

3. Which of the following are units for expressing rotational velocity, commonly denoted by brainly.com/question/2887706

Answer Details:

Grade: High School

Subject: Physics

Chapter: Pressure

Keywords:

Storms, weather forecast, satellite, barometer, radars, tracking a storm, different altitudes, pressure variations, temperature, winds, measure.

3 0
4 years ago
Read 2 more answers
​A piston–cylinder assembly contains 5.0 kg of air, initially at 2.0 bar, 30 oC. The air undergoes a process to a state where th
vlada-n [284]

Answer:

Explanation:

The process is isothermic,  as P V = constant .

work done = 2.303 n RT log P₁ / P₂

= 2.303 x 5 / 29 x 8.3 x 303  log 2 / 1 kJ

= 300.5k J

This energy in work done by the gas will come fro heat supplied as internal energy is constant due to constant temperature.

heat supplied  = 300.5k J

specific volume is volume per unit mass

v / m

pv = n RT

pv  = m / M  RT

v / m = RT / p M

specific volume = RT / p M

option B is correct.

5 0
3 years ago
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