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Alex
2 years ago
12

A 200-kg boulder is 1000-m above the ground.

Physics
1 answer:
dem82 [27]2 years ago
7 0

Answer: 1,960,000 J

Explanation:

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Find the potential energy of a 2 kg ball 15 m in the air.
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294.3 Joules

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The main component of all computer memory is
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The main component of all computer memory is RAM.

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How many atoms are in 3.5 moles of sulfur
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A spacecraft is moving past the earth at a constant speed of 0.60 times the speed of light. The astronaut measures the time inte
Afina-wow [57]

Answer:

the time interval that an earth observer measures is 4 seconds

Explanation:

Given the data in the question;

speed of the spacecraft as it moves past the is 0.6 times the speed of light

we know that speed of light c = 3 × 10⁸ m/s

so speed of spacecraft v = 0.6 × c = 0.6c

time interval between ticks of the spacecraft clock Δt₀ = 3.2 seconds

Now, from time dilation;

t = Δt₀ / √( 1 - ( v² / c² ) )

t = Δt₀ / √( 1 - ( v/c )² )

we substitute

t = 3.2 / √( 1 - ( 0.6c / c )² )

t = 3.2 / √( 1 - ( 0.6 )² )

t = 3.2 / √( 1 - 0.36 )

t = 3.2 / √0.64

t = 3.2 / 0.8

t = 4 seconds

Therefore, the time interval that an earth observer measures is 4 seconds

6 0
3 years ago
A cyclist and his bicycle have a combined mass of 88 kg and a combined
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Answer:D

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