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Fudgin [204]
3 years ago
15

How tall in cm is 5.4 feet

Physics
1 answer:
Digiron [165]3 years ago
3 0
That is 164.592cm = 5.4 feet
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Which type of matter is gold an element used in making jewelry A.) A heterogeneous mixture B.) A pure substance C.) A crystallin
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Answer:

A

Explanation:

<em>The gold used in the making of jewelry is usually not pure but a heterogeneous mixture of metals. Pure gold is quite soft and even though it may look better in appearance compared to those made using heterogeneous mixtures, it usually bends easily. Hence, in order to make the jewelry more durable, gold is usually mixed with other metals to form a heterogeneous mixture. </em>

The correct option is A.

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Which statement describes steps involved in the production of hydroelectric power?
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Answer is D.......Falling water turns a turbine that helps generate electricity.

Explanation:

Hydropower plants capture the energy of falling water to generate electricity. A turbine converts the kinetic energy of falling water into mechanical energy. Then a generator converts the mechanical energy from the turbine into electrical energy.

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Answer:

What are some ways we can improve on our land use?

- Avoid deforestation and close the forest frontier.

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The temperature of the cooling water as it leaves the hot engine of an automobile is 240 °F. After it passes through the radiato
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Answer:571.09 kJ

Explanation:

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Temperature of cooling water from engine exit=240^{\circ} F\approx 115.55^{\circ}C

After Passing through the radiator its temperature decreases to 175^{\circ}F\approx 79.44^{\circ}F

specific heat of water=4.184 J/g^{\circ}C

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Q=m\cdot c\cdot \Delta T

Q=3.78\times 4.184\times 1000\times (115.55-79.44)

Q=3.78\times 4.184\times 1000\times (36.11)

Q=571.09 kJ

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Definition of complex machine
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