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mojhsa [17]
3 years ago
7

The Earth, the Sun, and the rest of the solar system are almost unimaginably old when viewed on a human time scale. While modern

humans first evolved approximately 200,000 years ago, the age of the Earth, the Sun, and the rest of the solar system is approximately _______ years. a 100,000 b 4.6 billion c 4.6 million d 200,000
Physics
2 answers:
Zielflug [23.3K]3 years ago
8 0
<span>While modern humans first evolved approximately 200,000 years ago,
the age of the Earth, the Sun, and the rest of the solar system is believed
to be approximately 4.6 billion years.

That makes the Earth, the Sun, and the rest of the solar system
something like  23 thousand times  as old as the human species !
</span>
luda_lava [24]3 years ago
5 0

in much easier words, it's 4.6 billion years.

why?BECAUSE.... study island said "The age of the Earth, the Sun, and the rest of the Solar System is approximately 4.6 billion years. This means that modern humans' time on Earth (200,000 years) accounts for only an extremely small part of the Earth's history." and that's on, not knowing the answer and having to search it up.PERIOD. -no t-

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A rocket accelerates by burning its onboard fuel, so its mass decreases with time. Suppose the initial mass of the rocket at lif
Serggg [28]

Answer:

Height of the rocket be one minute after liftoff is 40.1382 km.

Explanation:

v(t)=-gt-v_e\times \ln \frac{m-rt}{m}

v = velocity of rocket at time t

g = Acceleration due to gravity =9.8 m/s^2

v_e = Constant velocity relative to the rocket = 2,900m/s.

m = Initial mass of the rocket at liftoff = 29000 kg

r = Rate at which fuel is consumed = 170 kg/s

Velocity of the rocket after 1 minute of the liftoff =v

t = 1 minute = 60 seconds'

Substituting all the given values in in the given equation:

v(60)=-9.8 m/s^2\times 60 s-2,900m/s\times \ln (\frac{29,000 kg-170 kg/s\times 60 s}{2,9000 kg})

v(60) = 668.97 m/s

Height of the rocket = h

Velocity=\frac{Displacement}{time}

668.97 m/s=\frac{h}{60 s}

h=668.97 m/s\times 60 s=40,138.2 m = 40.1382 km

Height of the rocket be one minute after liftoff is 40.1382 km.

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3 years ago
What is the smallest accurate measurement that can be made with an instrument?
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The capacitor is now reconnected to the battery, and the plate separation is restored to d. A dielectric plate is slowly moved i
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Answer:

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What is the velocity of an object that has been in free fall for 1.5s?
Crank

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D. 15 m/s downward

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