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bonufazy [111]
4 years ago
9

Please help me pleas

Physics
2 answers:
Elena-2011 [213]4 years ago
5 0
The answer to the second question is true because: g<span>enerally, </span>electromagnetic<span> radiation is classified by wavelength into radio wave, microwave, terahertz  radiation, infrared, the visible region that is perceived as light, ultraviolet, X-rays and gamma rays. 
</span>Hope this helps!:)
Fudgin [204]4 years ago
3 0
1. a 
2 .d hope this helps 
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You catch a volleyball (mass 0.270 kg) that is moving downward at 7.50 m/s. In stopping the ball, your hands and the volleyball
sesenic [268]

Explanation:

The work done equals the change in energy.

W = ΔKE

W = 0 − ½mv²

W = -½ (0.270 kg) (-7.50 m/s)²

W = -7.59 J

Work is force times displacement.

W = Fd

-7.59 J = F (-0.150 m)

F = 50.6 N

3 0
4 years ago
A thin uniform cylindrical turntable of radius 2.2 m and mass 35 kg rotates in a horizontal plane with an initial angular speed
fenix001 [56]

Explanation:

The given data is as follows.

    M = 35 kg,    radius (r) = 2.2 m,

     m = 17 kg,     = 11 rad/s

We assume that will be the final angular speed.

Now, according to the conservation of angular momentum.

         L_{1} = L_{2}

or,    I_{1} \times \omega_{1} = I_{2} \times \omega_{2}

Putting the given values into the above formula as follows.

  I_{1} \times \omega_{1} = I_{2} \times \omega_{2}

   

or,  

      = \frac{(0.5 \times 35 \times (2.2)^{2}) \times 11}{(0.5 \times 35 \times (2.2)^{2} + 17 \times (1.5)^{2})}

      = 7.58 rad/s

Thus, we can conclude that the angular speed of the clay and turntable is 7.58 rad/s.

4 0
4 years ago
Read 2 more answers
Which has a greater mechanical advantage. a doorknob or screwdriver?
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Answer:

screwdriver should be the awnser is what I think

6 0
3 years ago
Geology is the science that pursues an understanding of __________.
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Geology is the study of the Earth, the materials of which it is made, the structure of those materials, and the processes acting upon them.
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The best estimate of the orbital period of a typical asteroid is 9.0 earth years. 
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