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jolli1 [7]
4 years ago
10

If a satellite or spaceship explodes in outer space, you can see the explosion from a distance but you cannot hear it. Why?

Chemistry
2 answers:
gulaghasi [49]4 years ago
7 0
C) Sound is a mechanical wave and needs a medium to travel through while light is an electromagnetic wave
Lynna [10]4 years ago
5 0
The answer is:
   C) Sound is a mechanical wave and needs a medium to travel through while light is an electromagnetic wave.
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A sample of neon gas at 102 °C and a volume of 4 liters is cooled to -98 °C. What is the new volume
STALIN [3.7K]

Answer: V= 1.87 L

Explanation: Use Charles Law to solve for the new volume.

V1/T1 = V2/T2 where temperature is in Kelvin. So convert temperature to Kelvin.

4 L ( 175 K ) / 375 K

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Cancel out both units of K.

8 0
3 years ago
8. What energy transformations take place in a simple electric motor?
DochEvi [55]

Answer:

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Explanation:

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What are alkali metals
jeyben [28]

Answer:

Alkali metals are highly reactive elements that appear to be silver and they are found in group 1 of the periodic table.  It consists of lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).  As you go further down the group, the more reactive they are.  Those elements all react to water and air, so they must be kept in oil to preserve their state.  

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3 years ago
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At the end of seafloor spreading, where does the molten rock solidify?
olganol [36]

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As the two plates move apart from each other, which often occurs at a rate of several centimetres per year, molten rock wells up from the underlying mantle into the gap between the diverging plates and solidifies into new oceanic crust. Spreading centres are found at the crests of oceanic ridges.

Explanation:

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8 0
3 years ago
A block of wood has a height of 10 m, a length of 2 m, and a width of 2 m. What is the volume of the rock?
Lubov Fominskaja [6]
Volume = lwh

L=2m
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H=10m

2•2•10 = 40 m^3
3 0
4 years ago
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