3 years ago

Which substance will cool down the slowest during the night, and why?

Physics

1 answer:

Studentka2010 [4]3 years ago

5 0

Cool down the Slowest

B. Seawater, because it heats up slower and gives away heat slower than sand.

Read the question wrong the first time

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If a 10 kg ball and a 100 kg ball we’re dropped from a plane, which would hit the ground first?

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2 years ago

What are two benefits of scientists using a diagram to model the water cycle?

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it can be used to show how the parts of the cycle relate to one another

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2 years ago

A simple model for a person running the 100 m dash is to assume the sprinter runs with constant acceleration until reaching top

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Answer:

He will complete the race in total time of T = 10 s

Explanation:

Total distance moved by the sprinter in 2.14 s is given as

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3 years ago

As waves get closer to a beach they _____.

krok68 [10]

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2 years ago

A 103 kg physics professor has fallen into the Grand Canyon. Luckily, he managed to grab a branch and is now hanging 93 m below

siniylev [52]

Answer:

125.83672 seconds

Explanation:

P = Power of the horse = 1 hp = 746 W (as it is not given we have assumed the horse has the power of 1 hp)

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g = Acceleration due to gravity = 9.8 m/s²

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$W=mgh\\\Rightarrow W=103\times 9.8\times 93\\\Rightarrow W=93874.2\ J$

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$P=\frac{W}{t}\\\Rightarrow t=\frac{W}{P}\\\Rightarrow t=\frac{93874.2}{746}\\\Rightarrow t=125.83672\ seconds$

The time taken by the horse to pull the professor is 125.83672 seconds

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3 years ago