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tatuchka [14]
3 years ago
10

Does fire use energy??

Physics
1 answer:
serious [3.7K]3 years ago
6 0
No fire uses oxygen sparks and flammable wood or whatever you choose to burn
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Order the seven basic spectral types from hottest to coldest.
vfiekz [6]

Answer:

There are basically seven spectral types which are used for classifying the stars and it is arranged in the order of increasing temperature from the hottest temperature to the coldest division are: O, B, A, F, G, K, and M. These categories are basically divided into the sub category in the spectral where O is the hottest type and M is the coldest type.  

8 0
3 years ago
A star produces 2x10^26 watts. how much energy does it lose every minutes
Step2247 [10]

Answer:

Energy loss per minute will be 120\times 10^{26}j

Explanation:

We have given the star produces power of 2\times 10^{26}W

We know that 1 W = 1 J/sec

So 2\times 10^{26}W=2\times 10^{26}J/sec

Given time = 1 minute = 60 sec

So the energy loss per minute =2\times 10^{26}\times 60=120\times 10^{26}j

We multiply with 60 we have to calculate energy loss per minute

7 0
3 years ago
An airplane has an average speed of 740 mph
crimeas [40]

Answer:

2590

Explanation:

7 0
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What is the pressure exerted when a force of 20 N is applied to an object over an area of 2 m2 ?
IgorC [24]

(20 N)/(2 m²) = (20/2) N/m² = 10 Pa

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The pascal (Pa) is the derived SI unit of pressure equal to 1 N/m².

8 0
3 years ago
Why does your hand feel cool if you spill some alcohol on it?
son4ous [18]
<span>It takes heat to make something evaporate, so it takes heat from your arm. Alcohol easily evaporates at room temperature, so it feels cool. This is also why you feel cool when getting out of the pool. The water on your skin evaporates.

</span>
6 0
3 years ago
Read 2 more answers
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