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BartSMP [9]
3 years ago
13

What are the three defining features of a planet?

Physics
1 answer:
Alex3 years ago
5 0
A planet is a celestial body that is in orbit around the Sun, has sufficient mass for its self-gravity<span> to overcome rigid </span>body forces<span> so that it assumes a</span>hydrostatic equilibrium<span> (nearly round) </span>shape<span>, and (c) has cleared the neighbourhood around its orbit.</span>
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A book is sliding across a horizontal desk and comes to a stop. the books kinetic energy was converted into what type of energy
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Friction stole the book's kinetic energy, and turned it into heat energy ... which blew away in the breeze.
4 0
3 years ago
A motorcycle is following a car that is traveling at constant speed on a straight highway. Initially, the car and the motorcycle
ra1l [238]

Answer:

a) t = 4.16 s

b) x = 141.51 m

Explanation:

Given

v = 21.5 m/s

x0 = 52.0 m

a = 6.0 m/s²

a) Motorcycle

x = v0*t + (a*t²/2)

x = 21.5t + (6*t²/2)

x = 21.5t + 3t²   <em>(I)</em>

Car

x = x0 + v0*t

x = 52 + 21.5t  <em>(II)</em>

<em />

then we can apply <em>I = II</em>

21.5t + 3t² = 52 + 21.5t

⇒ 3t² = 52

⇒ t = 4.16 s

b) We can use <em>I</em> or <em>II</em>, then

x = 52 + 21.5*(4.16)

⇒ x = 141.51 m

8 0
3 years ago
Sunlight strikes a solar panel, which is then used to power the lights in a
Stells [14]

Answer:

B

Explanation:

Sunlight comes in the form of light energy. Upon striking the solar panels, it converts the light energy into electrical energy so as to run throughout the circuits. Then since it's used to power light, the electrical energy will be converted back into light energy

7 0
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Which is greater, the gravitational force between earth and the moon, or the force between earth and the sun?
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Why does an energy transfer not always result in phase change?
mash [69]

Answer:

These energy exchanges are not changes in kinetic energy. They are changes in bonding energy between the molecules. "If heat is coming into a substance during a phase change, then this energy is used to break the bonds between the molecules of the substance

4 0
3 years ago
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