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3 years ago

6

Which example describes a nonrenewable resource?

2 answers:

BARSIC [14]3 years ago

7 0

Answer:

Refineries process oil, found in the Earth, and turn it into gasoline to be used by cars.

Explanation:

The first option describes Geothermal energy. Geothermal energy uses the heat of the Earth's crust as a heat source. It is a renewable resource.

Refineries use the oil extracted from the Earth to produce gasoline. This is a non renewable resource as the oil found in the Earth is of finite quantity and is being depleted faster than it is being replenished.

Solar panels use the sunlight to produce electricity. Sunlight is a renewable resource.

Windmill uses the power of moving air to generate electricity. Wind is a renewable resource.

In-s [12.5K]3 years ago

6 0

The refineries that use the oil to put in their cars as gasoline and then after a while the oil will disappear and go away and that's what a nonrenewable resource would be

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Glycerin is poured into an open U-shaped tube until the height in both sides is 20cm. Ethyl alcohol is then poured into one arm

Liula [17]

Answer:

7.5 cm

Explanation:

In the figure we can see a sketch of the problem. We know that at the bottom of the U-shaped tube the pressure is equal in both branches. Defining $\rho_A:$ Ethyl alcohol density and $\rho_G:$ Glycerin density , we can write:

$\rho_A\times g \times h_1 + \rho_G \times g \times h_2 = \rho_G \times g \times h_3$

Simplifying:

$\rho_A\times h_1 = \rho_G \times (h_3 - h_2) (1)$

On the other hand:

$h_1 + h_2 = \Delta h + h_3$

Rearranging:

$h_1 - \Delta h = h_3 - h_2 (2)$

Replacing (2) in (1):

$\rho_A\times h_1 = \rho_G \times (h_1 - \Delta h)$

Rearranging:

$\frac{h_1 \times (\rho_A - \rho_G)}{- \rho_G} = \Delta h$

Data:

$h_1 = 20 cm; \rho_A = 0.789 \frac{g}{cm^3}; \rho_G = 1.26 \frac{g}{cm^3}$

$\frac{20 cm \times (0.789 - 1.26) \frac{g}{cm^3}}{- 1.26\frac{g}{cm^3}} = \Delta h$

$7.5 cm = \Delta h$

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65. A length of wire is bent into a closed loop and a magnet is plunged into it, inducing a voltage and, consequently, a current

natulia [17]

Answer:

Resistance of the second wire is twice the first wire.

Explanation:

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