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lisov135 [29]
3 years ago
14

What's true about the elliptical path that the planets follow around the sun? A. A line can be drawn from the planet to the sun

that follows the same curve as the ellipse. B. A vector can be drawn from the center of one planet to the center of an adjacent planet. C. A line can be drawn from the planet to the sun that sweeps out equal areas in equal times. D. A scalar can be measured from the angle that the planet travels relative to the sun's orbit
Physics
1 answer:
Gala2k [10]3 years ago
5 0

Answer:

The answer is C

Explanation:

Just took the test and this is correct on edge, hope this helps :)

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If the speed is higher than the orbital velocity, but not high enough to leave Earth altogether (lower than the escape velocity), it will continue revolving around Earth along an elliptical orbit. (D) for example horizontal speed of 7,300 to approximately 10,000 m/s for Earth.
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A 9500 kg boxcar traveling at 14 m/s strikes a stationary second car. The two stick together and move off with a speed of 6.0 m/
jasenka [17]

<u>Answer:</u> The mass of the second car is 12666.7 kg

<u>Explanation:</u>

To calculate the mass of car, we use the equation of law of conservation of momentum, which is:

m_1u_1+m_2u_2=(m_1+m_2)v

where,

m_1 = mass of car 1 = 9500 kg

u_1 = Initial velocity of car 1 = 14 m/s

m_2 = mass of car 2 = ? kg

u_2 = Initial velocity of car 2 = 0 m/s

v = Final velocity = 6.0 m/s

Putting values in above equation, we get:

(9500\times 14)+(m_2\times 0)=(9500+m_2)6.0\\\\m_2=\frac{9500\times 14}{6}-9500=12666.7kg

Hence, the mass of the second car is 12666.7 kg

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4 years ago
Mrs. Buckley asked her physical science class to look at the graph and tell which of the following explanations are most likely
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I think it's D. Options C and D are true. The graph shows an increase in speed from points 6 to 12, which means Option C is true. It shows an even bigger increase in speed from points 24 to 30, and since bikes go faster when traveling downhill, I would think that Option D was correct as well.

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What forces do a free body diagram analyze?
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Friction, gravity, normal force, drag force, tension force and human force are the forces that occurs on free body.

<h3>What are the forces in a free body diagram?</h3>

There are large number of external forces acting on an object such as friction, gravity, normal force, drag force, tension force and human force due to pushing or pulling. These forces can cause the motion of the free body which is present at rest form or can stop a body which is moving. A free-body diagram is a useful means of describing and analyzing all the forces that act on a body to determine equilibrium.

So we can conclude that friction, gravity, normal force, drag force, tension force and human force are the forces that occurs on free body.

Learn more about force here: brainly.com/question/388851

#SPJ1

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