3 years ago

Select the correct answer.

Physics

2 answers:

Lemur [1.5K]3 years ago

8 0

Answer:

B.Temperature and density increase with layer thickness.

Explanation:

Serhud [2]3 years ago

5 0

Answer:

b hope this helps

Explanation:

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The engine of a locomotive exerts a constant force of 8.1*10^5 N to accelerate a train to 68 km/h. Determine the time (in min) t

Bumek [7]

Answer:443.1 s

Explanation:

Given

Engine of a locomotive exerts a force of $8.1\times 10^5 N$

Mass of train $=1.9\times 10^7$

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F=ma

so $acceleration(a) =\frac{F}{m}=\frac{8.1\times 10^5}{1.9\times 10^7}$

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and acceleration is

$a=\frac{v-u}{t}$

$0.042631=\frac{18.88-0}{t}$

$t=443.089 \approx 443.1 s$

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3 years ago

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Artyom0805 [142]

Answer:

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3 years ago

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What type of electromagnetic radiation is being used in the picture?

pashok25 [27]

Answer: b i think

Explanation:

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