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max2010maxim [7]
2 years ago
11

At which point is the kinetic energy of the roller coaster at its maximum, and the potential energy at its minimum?

Physics
2 answers:
sesenic [268]2 years ago
7 0
A point b cause at a it’s gaining kinetic energy and at b it has the most kinetic energy
vitfil [10]2 years ago
5 0
It is point c because at this point all potential energy has turned into kinetic energy.( do not be mistake and say b. The answer is C)
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W work
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If F = constant:

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3 years ago
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g calculate the effectiveness radiation dosage in sieverts for a 79 kg person who is exposed 6.8x10^9
Elza [17]

Answer:

The answer is "\bold{dosage = 0.031 rem}"

Explanation:

please find the complete question in the attached file.

Given value:

m = 79\  kg  \\\\n = 3.4 \times  10^9 \\\\E = 5.5  \times  10^{-13} \\\\ RBE = 15

\to E = n E\\

        = 3.4  \times  10^9  \times  5.5  \times  10^{-13} \\\\      = 1.87 \times  10^{-3}

\to E(absorbed) = 1.87  \times 10^{-3}  \times  0.87 = 1.63  \times  10^{-3}

calculating the radiation absorbed per kg:

= \frac{1.63  \times  10^{-3}}{79}  \\\\ = 2.06  \times  10^{-5} \\\\ = 0.00206 \  rad

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4 0
3 years ago
Higher temperatures along with moisture climates generally increase the rate of
Bad White [126]

Answer:

Option (D)

Explanation:

Weathering refers to the disintegration of rocks due to the different geological processes that are initiated by agents such as wind, water and ice.

In a region where the temperature is high, and there is sufficient amount of moisture content in the air, there occurs high rate of physical, chemical and biological type of weathering.

  • Physical weathering processes such as freeze-thaw method and exfoliation method commonly occurs in this type of region.
  • Chemical weathering processes such as hydrolysis, oxidation, as well as carbonation method occurs in the region of high temperature, moist climatic condition.
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Thus, the correct answer is option (D).

4 0
3 years ago
Could I get help on this question . I’m scared I’m wrong
goldfiish [28.3K]

Answer:

It is correct!

Explanation:

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