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PIT_PIT [208]
4 years ago
9

If stretching is done during the cool-down, it can help the muscle _____.

Physics
1 answer:
BaLLatris [955]4 years ago
6 0
If stretching is done during the cool-down it should help the muscles with increased flexibility.
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The sun is about 150 million km away from earth. The rays of sunlight that reach earth’s atmosphere are best represented as ____
tangare [24]

Five

The diagram that represents rays from the sun is given below.

The answer from the diagram is parallel lines.

Six

The formula for this is n_i * Sin(i) = n_r * sin(r)

n1 = 1.333 water

n2 = 1.309 ice

i (angle) = 40o

r (angle) = ?

Solution

1.333 * sin(40) = 1.309*sin(r)

1.333 * sin(40)/1.309 = sin(r)

0.6546 = sin(r)

sin-1(0.6546)  = 40.88 degrees.

I guess my closest answer would be A. I'm not rounding at all and that's the answer I get.

6 0
3 years ago
In how many ways can five basketball players be placed in three postitions?
Mazyrski [523]

Answer:

Well if they playing a game like that

4 0
3 years ago
Which of the following is a compound?<br><br> A)oxygen<br> B)water<br> C)nitrogen<br> D)air
kozerog [31]
The Answer is A. oxygen
6 0
3 years ago
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nirvana33 [79]
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5 0
3 years ago
a 645 N person is wearing stiletto shoes. If she lifts her left leg, and rocks back onto the heel under her right leg, the press
fgiga [73]

Answer:

0.96cm

Explanation:

Given parameters:

Weight of person = 645N

Pressure of the heel = 9000000PA

Unknown

Diameter of the circular base = ?

Solution

Pressure is the force per unit area of a body.

  Pressure = \frac{Force}{Area}

To solve this problem, find the unknown area of the circle;

             Pressure x Area = Force

         Area     = \frac{Force}{Pressure}

           Area  = \frac{645}{9000000} = 7.17 x 10⁻⁵m²

Note: 1Pa = 1Nm⁻²

Now;

  Area of a circle = π r²

         r = \frac{d}{2}

    Area =  π x \frac{d^{2} }{4}

d is the diameter

                    d²  = 4 x Area  x (1/π)

                d² = 4 x 7.17 x 10⁻⁵ x  (1/3.14) = 9.13 x 10⁻⁵

              d = 0.0096m

To cm;

                100cm = 1m

   0.0096m; 0.0096 x 100=  0.96cm

7 0
3 years ago
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