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steposvetlana [31]
3 years ago
8

Which statement describes a scientific theory?

Physics
2 answers:
Sergeeva-Olga [200]3 years ago
7 0

Answer: its not "A law changes based on new observations and testing."

Explanation:

i just took the test it dont tell me whats the right Q ,all i know is that "A law changes based on new observations and testing." is wrong

Olin [163]3 years ago
5 0

Answer:

A theory changes based on new observations and testing.

Explanation:

Theories are very critical part of the scientific methods with usually starts with simple observations around.

Scientific theories abounds. They typically provide explanation into a phenomenon and gives us the reason why something occurs or not.

  • They are usually based on multiple laboratory trials which have been repeated over and over again.
  • Most times, when new bodies of evidence suffice, a theory is often revised.
  • This will provide more detailed and scientifically au couture information about a phenomenon.
  • It is a law the usually states how things behave without explaining why they do so.
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A car’s bumper is designed to withstand a 4.0-km/h (1.1-m/s) collision with an immovable object without damage to the body of th
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Answer:

 avriage force F = 2722.5 N

Explanation:

For this problem we can use Newton's second law, to calculate the average force and acceleration we can find it by kinematics.

      vf² = v₀² - 2 ax

The final carriage speed is zero (vf = 0)

      0 = v₀² - 2ax

      a = v₀² / 2x

      a = 1.1²/(2 0.200)

      a = 3.025 m / s²

      a = 3.0 m/s²

We calculate the average force

      F = ma

      F = 900 3,025

      F = 2722.5 N

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