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katen-ka-za [31]
2 years ago
11

Two planets X and Y travel counterclockwise in circular orbits about a star, as seen in the figure.

Physics
1 answer:
Anestetic [448]2 years ago
7 0

According to mathematics, the planet's angle is stated as

dY=704 degrees.

<h3>What is the current rotational angle of planet Y?</h3>

We may demonstrate this by using Kepler's third law, which asserts that a planet's orbit squared is a function of cubed radius.

The equation for the period is often expressed numerically as

(periodX / periodY)^2 = (radius X / radius Y)^3

Therefore

(pX / pY)^2 = 4^3

(pX / pY)^2 = 64

\sqrt{(pX / pY )^2}= \sqrt{64}

pX / pY=8

In conclusion, planet Y travels 8 times further than planet X does in the same amount of time since one orbit on planet X takes 8 times longer to complete.

planet Y travels ;

dY=8 * 88.0

dY= 704 degrees

Read more about Kepler's third rule

at brainly.com/question/1086445

#SPJ1

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A football player pushes against another player trying to block him from moving any farther down the field. Which term best desc
Juli2301 [7.4K]

Answer:

its a negative work, not a negative force

Explanation:

I took the quiz first i put negative force i got it wrong

then when i put negative work it was right

Hope it help:)♥︎ plz mark me as brainliest

8 0
4 years ago
A fishing boat drags a net for 25 seconds, doing 3500 Joules of work. How much power was the boat using?
Blizzard [7]
The equation for power is P=w/t, where w=work done in joules and t=time in seconds. 

in this case:

p=w/t
p=3500/25 
p=140

so, the boat was using 140 watts of power.
5 0
4 years ago
Two 2 kg masses is placed at either end of a rod that has a mass of .5 kg and a length of 3 m. What is the moment of inertia if
sergij07 [2.7K]

Explanation:

a) I=\displaystyle \sum_{i}m_ir_i^2

where r_i is the distance of the mass m_i from the axis of rotation. When the axis of rotation is placed at the end of the rod, the moment of inertia is due only to one mass. Therefore,

I= mr^2 = (2\:kg)(3\:m)^2 = 18\:kg-m^2

b) When the axis of rotation is placed on the center of the rod, the moment is due to both masses and the radius r is 1.5 m. Therefore,

\displaystyle I= \sum_{i}m_ir_i^2 = 2(2\:kg)(1.5\:m)^2 = 9\:kg-m^2

7 0
3 years ago
A fireman is standing on top of a building 19 m high, holding a firehose 1 m above the top of the building. She finds that if sh
DENIUS [597]

Answer:

A 2 d vector model

The acceleration function is -9.8 m/s2 which is gravity

Initial velocity on the Y axis is 0, on the X axis is 12 m/s

Inital position is 20 mts above the ground.

It takes the water 1.01 seconds to reach the other building.

THe distace from one building to the other is 12.11 meters.

Explanation:

In order to solve this you just need to carefully read the problem and the data you are given, and use the formula for height in free fall:

h=\frac{1}{2} g*t^{2}

So first the data, we know that the water is coming out at a height of 20 meters since the building is 19 meters tall and the fireman is holding the firehose 1 meter above it, and the water is hitting the second building at a height of 15 meters, that means that the water is travelin -5meters.

Gravity as it doesn´t say otherwise would be 9.8m/s2 since that is gravity on earth, and water is leaving the firehose at 12m/s horizontally.

We can calculate the time by using the height formula fro free fall:

h=\frac{1}{2} g*t^{2}\\5=\frac{1}{2} 9.81*t^{2}\\t^{2}= \frac{10}{9.8} \\t^{2}=1.0193\\t=1.009 seconds

So it takes 1.009 seconds for the water to frop from 20 to 15 meters, as the horizontal velocity remains the same we just multiply it by the time and we get the horizontal distance between the two buildings and that would be:

12.11 meters.

5 0
4 years ago
Solids that have flat sides and a repeating pattern of atoms are called ______________.
DiKsa [7]
 they are called crystals

7 0
4 years ago
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