3 years ago

Which of the following classifications of star temperature is coolest?

Physics

2 answers:

Dmitry_Shevchenko [17]3 years ago

7 0

The coolest would be m the hottest would be o

Oliga [24]3 years ago

3 0

The hottest would be the O type and the coolest is M

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A roller coaster travels around a vertical 8-m radius loop. Determine the speed at the top of the loop if the normal force exert

strojnjashka [21]

Answer:

$v=10m/sec$

Explanation:

From the question we are told that

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where

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$Fg= force due to gravity$

Generally the net force is given to be $FC(force towards center)$

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Mathematical we can now derive V

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$\frac{5mg}{4} =\frac{mv^2}{8}$

$v^2 =\frac{40*10}{4}$

$v=10m/sec$

Therefore the speed of the roller coaster is given ton be $v=10m/sec$

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3 years ago

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I think the answer is D.
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Tju [1.3M]

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