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poizon [28]
3 years ago
9

Hooke's Law Practice

Physics
1 answer:
Oxana [17]3 years ago
8 0

Answer:sheeExplanation:

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During cooling, the kinetic energy of the molecules falls. Why does this happen?
cricket20 [7]

Answer:

The motion of the molecules slow down

Explanation:

In heating process, increase in the temperature increases the motion of the molecules and hence it gains the kinetic energy and moves.

While in the cooling process, decrease in temperature reduces the speed or motion of the molecules and that's why during cooling kinetic energy of the molecules falls down.

5 0
4 years ago
Quelqu'un peut m'aider je doit rendre ceci demain merci d'avance ps: c'est noté
oee [108]

Answer:

I didn't understand your language I hope you'll write in English language next time

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3 years ago
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4 years ago
Astronauts aboard the ISS move at about 8000 m/s, relative to us when we look upward.How long does an astronaut need to stay abo
Luba_88 [7]

Answer:

#_time = 7.5 10⁴ s

Explanation:

In order for the astronaut to be younger than the people on earth, it follows that the speed of light has a constant speed in vacuum (c = 3 108 m / s), therefore with the expressions of special relativity we have.

            t = \frac{t_p}{ \sqrt{1-  (v/c)^2} }

where t_p is the person's own time in an immobile reference frame,

           t_{p} = t \sqrt{1 - (\frac{v}{c})^2 }

let's calculate

we assume that the speed of the space station is constant

              t_p = 1 \sqrt{1 - \frac{8 \ 10^3}{3 \ 10^8} }

             t_p = 1 \sqrt{1- 2.6666 \ 10^{-5}}

             t_ =  0.99998666657   s

             

therefore the time change is

             Δt = t - t_p

             Δt = 1 - 0.9998666657                  

              Δt = 1.3333 10⁻⁵ s

this is the delay in each second, therefore we can use a direct rule of proportions. If Δt was delayed every second, how much second (#_time) is needed for a total delay of Δt = 1 s

               #_time = 1 / Δt

               #_time =\frac{1}{1.3333 \ 10^{-5}}

               #_time = 7.5 10⁴ s

5 0
3 years ago
Name the energy possessed by hot air
sashaice [31]

Answer:

geothermal energy

Explanation:

the energy is obtained from the heat within the surface of earth

6 0
3 years ago
Read 2 more answers
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