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BlackZzzverrR [31]
3 years ago
8

Which of these forces is acting on a baseball sitting on level ground? A. applied force B. frictional force C. gravitational for

ce
Chemistry
2 answers:
aksik [14]3 years ago
8 0

C.) Gravitational Force

snow_lady [41]3 years ago
4 0

C. gravitational force

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The Prandtl number, Pr, is a dimensionless group important in heat transfer. It is defined as Pr - Cp*mu/k where Cp is the heat
algol [13]

Answer:

The Prandtl number for this example is 14,553.

Explanation:

The Prandlt number is defined as:

Pr=\frac{C_{p}*\mu}{k}

To compute the Prandlt number for this case, is best if we use the same units in every term of the formula.

\mu=1896 \frac{lbm}{ft*h}*\frac{1000 g}{2.205 lbm}*\frac{3.281 ft}{1 m}*\frac{1h}{3600s}  =7938 \frac{g}{m*s}

Now that we have coherent units, we can calculate Pr

Pr=\frac{C_{p}*\mu}{k}=0.66*7938/0.36=14553

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3 years ago
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Mass is the amount of matter in the body.

Weight is the measure of force.
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Which Act is the set of laws signed by former President Nixon that helps keep water clean in the United States?
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Clean Water Act

Explanation:

The Clean Water Act in 1972 was a set of laws signed by former President Nixon that helps to keep water clean in the United States.

  • The act sets a safe limit for the amount and kind of pollutants that can be released into the water that won't contaminate it.
  • The acts charged the Environmental Protection Agency(EPA) to set a safe limit for nature and amount of pollutants that can be released into the water.
  • This act is one of the several environmental polices in the United States that ensures a safe drinking water is available.

learn more:

Pollution brainly.com/question/10743354

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Is mercury homogeneous or heterogeneous?
RSB [31]

Answer:

homogenous

Explanation:

its a pure element, so it is a pure substance

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