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belka [17]
3 years ago
11

What is a list of solid mixtures in a classroom?

Physics
1 answer:
OLEGan [10]3 years ago
6 0
Well,
1.} book
2.} computer
3.} desk
4.} chair
5.} pencil
6.} eraser
7.} dry erase board
8.} ruler
9.} calculator 
10.} TV 
and etc
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You have been hired to design a spring-launched roller coaster that will carry two passengers per car. The car goes up a 12-m-hi
Vlada [557]

Answer:

Vmax=11.53 m/s

Explanation:

from conservation of energy

      E_A} =E_{B}

     Spring potential energy =potential energy due to elevation

   0.5*k*x²= mg(h_{B}-h_{A} )=mgh

   0.5*k*2.3²= 430*9.81*6

         k=9568.92 N/m

For safety reason

                                 k"=1.13 *k= 1.13*9568.92

                                    k"=10812.88 N/m

agsin from conservation of energy

      E_A} =E_{C}

    spring potential energy=change in kinetic energy

   0.5*k"*x²=0.5*m*V_{max}^{2}

      10812.88 *2.3²=430*V_{max}^{2}

           V_{max}=11.53 m/s

5 0
3 years ago
Please help me it is for learning at home.
Temka [501]

Answer:

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Explanation:

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14. It takes an airplane nearly ¾ of a mile to stop. Which law of motion is being used?
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