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Angelina_Jolie [31]
3 years ago
6

__________ was the first African American to earn a doctoral degree in psychology from a university in the US and is considered

the father of African American psychology. A. Richard Suinn B. Kenneth Clark C. J. Henry Alston D. Francis C. Sumner Please select the best answer from the choices provided A B C D
Physics
2 answers:
Vera_Pavlovna [14]3 years ago
7 0

Answer:

J. Henry Alston

Explanation:

qwelly [4]3 years ago
4 0
The answer is Francis Sumner
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Jane has a mass of 55 kg and his body covers 700 nails with a surface area of 1.00 mm,
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We have,

  • Jane mass is 55 kg
  • His body covered with 700 nails all of them having a surface area of 1.00 mm² each = 700 × 1 = 700 mm² = 700/1000000 = 7/10000

We know that,

  • Pressure = Force/Area

Let's calculate force as we already have area;

  • F = ma
  • F = 55 × 9.8 { Acceleration due to gravity }
  • F = 539 N

Now, if should she would be on 700 nails then pressure will be;

  • P = F/A
  • P = 539/7 × 10000
  • P = 5390000/7
  • P = 770,000 Pascal

And if should would be on a 1 nail only,

  • P = F/A
  • P = 539/1 × 1000000
  • P = 539000000 Pascal

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