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Natalija [7]
3 years ago
11

How do you find the mechanical advantage of a wheel and axle

Physics
1 answer:
alexandr1967 [171]3 years ago
7 0

Answer:  <em>In order to calculate the mechanical advantage of a wheel and axel, you can divide the radius of the wheel by the radius of the axle. If a wheel's radius is 60cm and its axle is 30cm, what is the mechanical advantage of the wheel and axle? The output force of the wheel and axle is 2 times greater than the input force.</em>

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<h2></h2>

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I NEED ANSWER ASAP
umka21 [38]

Answer:

97% will sink below the water

Explanation:

Waters density is 1 g/cm3

If an object's density is greater than 1g/cm3, it will sink. If it's less then it would float. 1-0.97 = 0.03. Only 3% of the ice would show while 97 will be under.

7 0
3 years ago
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What are the difficulties with the capture hypothesis of the Moon’s origin?
Lisa [10]

Answer:

No collision or altered trajectory

Similar percentage of oxygen isotopes

Explanation:

Capture hypothesis states that the Earth captured the moon. This is highly unlikely as such interactions of this type of bodies leads to a collision or their trajectories are altered. The percentage of the oxygen isotopes such as 16O, 17O and 18O in the Moon's basalts are almost identical with Earth. While meteorites have different percentage of oxygen isotopes.

Currently the accepted hypothesis is the  giant-impact hypothesis.

5 0
3 years ago
An internal combustion engine does 356 kJ of useful work using 946 kJ of thermal energy from the gasoline consumed in the engine
OlgaM077 [116]

Answer:

The efficiency of this engine is 37.63 %.

Explanation:

Given;

useful output work done by the combustion engine, = 356 kJ

input work, = 946 kJ

The efficiency of the combustion engine is calculated as;

Efficiency = \frac{0utput \ work}{1nput \ work} \times 100\%\\\\Efficiency = \frac{356 \ \times \ 10^3}{946 \ \times \ 10^3} \times 100\%\\\\Efficiency = 37.63 \ \%

Therefore, the efficiency of this engine is 37.63 %.

3 0
2 years ago
What does the first law of thermodynamics state about energy?
ruslelena [56]

The first law states that the internal energy change of that system is given by Q − W . Since added heat increases the internal energy of a system, Q is positive when added to the system and negative when removed from the system.

8 0
2 years ago
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Lelu [443]

Natural resources are found in abundance in the US.

Explanation:

The United States boasts of rich renewable and non-renewable natural sources.

Land: Large landmass is a huge advantage and being under one nation or government leads to great industrial, agricultural and economic development

  • Farmland: America boasts huge farmlands where mechanized agriculture is done on a large scale
  • Minerals: A number of minerals like copper, gold, iron ore, coal etc are found in abundance
  • Forests: The rich and different types of forests found in North America provides huge resources of timber

Water: The large coastline, huge lakes, and rivers all form a great resource for fishing, water recreational activities, oil drilling and other industries.

Energy sources: The U.S. is rich with energy sources like coal, oil, petroleum, and natural gas. Mining, especially of coal, is one of the chief industries in the U.S. The U.S. is a key oil producer in the World.

4 0
3 years ago
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