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ss7ja [257]
4 years ago
10

Is hot asphalt that is poured into the ground and cools a physical or chemical change?

Physics
2 answers:
Gala2k [10]4 years ago
5 0
Physical change
Because it's changed by heat
BaLLatris [955]4 years ago
5 0
Physical. the asphalt itself is not changing. Only its state, from liquid to solid.
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marishachu [46]

Answer:

Explanation:

Weight is actually a force. A force can change depending on its location. A mass remains constant no matter where it is.

A)

F = m * a

m = 250 kg

a = 9.81 m/s^2

F = 250 * 9.81 = 2452.5 N

B)

The acceleration due to gravity on the moon is roughly 1/6 what it is on earth. You can check its value in your notes.

a = 9.81 + (1/6) = 1.635

m = 250

F = 250 * 1.635

F = 408.75

C)

The mass is the same anywhere in the universe.

250 kg

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How are electromagnetic waves produced? A) An accelerating electric point charge (electron) emits electromagnetic waves. B) A ba
shusha [124]
Hello,

Here is your answer:

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Your answer is A!

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A student has begun training for tryouts for cross country by running a two mile loop through
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Answer:cause they running down a  steep hill

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6 0
3 years ago
A water strider bug is supported on the surface of a pond by surface tension acting along the interface between the water and th
Alik [6]

Answer:

minimum interface length = 1.36 mm

Explanation:

given data

weight of the bug = 10^{-4} N

solution

we will apply here Surface Tension formula that is

Surface Tension ,σ = Force ÷ length      ........................1

and we consider here surface tension for water is 7.34 × 10^{-2} N/m

so that here minimum interface length needed to support the bug is

minimum interface length = Force ÷ σ

minimum interface length = 10^{-4}  ÷ 7.34 × 10^{-2}

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3 years ago
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