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3 years ago

8

A tool that changes light Energy into electricity is a

1 answer:

schepotkina [342]3 years ago

3 0

Answer:

Photovoltaic cell or solar cells

Explanation:

Solar cells are cells that converts light energy from the sun into electrical energy for use in appliances. Light energy impinges on these cells, the photons of light causes electrons in the solar cells to move thereby resulting in the production of electricity in the cells.

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Sammy and Marisa are asked to determine what kind of bonds are present in the

kotykmax [81]

Answer:

I think Sammy is right because I'm sure the compound contains ionic bonds

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2 years ago

Help me with this question please.

Salsk061 [2.6K]

Explanation:

$current = \frac{voltage}{resistance} \\ i = \frac{v}{ohm} \\ i = \frac{240}{38} \\ i = 6.3158 \: amps$

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3 years ago

The movement of broken down pieces of rock from one place to another is called

Dvinal [7]

Answer:

The answer I believe is B. Erosion

Explanation:

Just sounds better than all the other choices.

7 0

2 years ago

Read 2 more answers

Which need, want value, or interest was most likely involved in the

____ [38]

For this question the answer is c

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3 years ago

Read 2 more answers

A certain process has ΔH° > 0, ΔS° < 0, and ΔG° > 0. The values of ΔH° and ΔS° do not depend on the temperature. Which

tino4ka555 [31]

Answer: It is non-spontaneous at all T.

Explanation:

According to Gibb's equation:

$\Delta G=\Delta H-T\Delta S$

$\Delta G$ = Gibbs free energy = +ve

$\Delta H$ = enthalpy change = +ve

$\Delta S$ = entropy change = -ve

T = temperature in Kelvin

$\Delta G$ = +ve, reaction is non spontaneous

$\Delta G$ = -ve, reaction is spontaneous

$\Delta G$ = 0, reaction is in equilibrium

Putting in the values:

$\Delta G=(+ve)-T(-ve)$

$\Delta G=(+ve)(+ve)=+ve$

Reaction is non spontaneous at all temperatures.

4 0

3 years ago