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nlexa [21]
2 years ago
15

Photovoltaic cells: a) have become more economical to produce and use over the past 25 years. b) are the most efficient means of

converting solar energy to electricity. c) are currently only used in urban areas of highly developed countries. d) have only been adapted for use in small appliances.
Physics
1 answer:
Yanka [14]2 years ago
8 0

Photovoltaic cells are the most efficient means of converting solar energy to electricity. Option b is correct.

<h3>What is a cell?</h3>

A cell is a voltage and current-producing device that consists of a single anode and cathode separated by an electrolyte.

One or more cells can make up a battery. One cell, for example, is one AA battery.

Light intensity on a solar cell is often measured in "suns," with one sun roughly equivalent to 1 kW/m².

Concentrated sunlight improves the ratio of current generated while the device is lighted vs when it is dark, hence enhancing output voltage and efficiency.

Photovoltaic cells are the most efficient means of converting solar energy to electricity.

Hence, option b is correct.

To learn more about the cell refer to:

brainly.com/question/3142913

#SPJ1

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How is volume and temperature related?
ololo11 [35]

Charles' Law: The Temperature-Volume Law. This law states that the volume of a given amount of gas held at constant pressure is directly proportional to the Kelvin temperature. As the volume goes up, the temperature also goes up, and vice-versa.

5 0
3 years ago
Which describes why people on earth can see light from the stars in the sky that are so far away?
Ugo [173]
Yes, C is correct. It self explains itself as we know light travels through a vacuum ( doesn't need a medium) and light is a type of electromagnetic wave.
7 0
3 years ago
5b) how fast is the car going after 6 seconds?
jeka94

Answer:

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8 0
3 years ago
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Helllppp mee!
Fed [463]

Given:

m = 0.14 kg

v = 18 m/s

To find:

Kinetic energy= ?

Explanation:

Kinetic energy of the object is possessed when the object is in motion. It is define as the work done required to accelerate a body from rest to motion. Unit of energy is Joule and it is same as unit of work done. Energy is nothing but the capacity to do work.

Solution:

Kinetic energy of the ball is given by,

Kinetic energy = \frac{1}{2}m v^{2}

m = 0.14 kg

v = 18 m/s

Kinetic energy = \frac{1}{2}(0.14) (18)^{2}

Kinetic energy = 226.8 Joule

5 0
3 years ago
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a player passes a 0.600kg basketball down court for a fast break.the ball leaves the player hands with a speed of 8.30m/s and sl
Setler79 [48]

At the release point, the ball has kinetic energy,

\dfrac12m{v_0}^2

and at its maximum height it has potential and kinetic energy,

-mgy+\dfrac12mv^2

where y is the maximum height attained above the release point.

The LoCoE tells us that we should have

\dfrac12m{v_0}^2=-mgy+\dfrac12 mv^2

\implies v^2-{v_0}^2=-2gy

\implies\left(7.20\dfrac{\rm m}{\rm s}\right)^2-\left(8.30\dfrac{\rm m}{\rm s}\right)^2=-2\left(9.80\dfrac{\rm m}{\mathrm s^2}\right)y

\implies y=0.870\,\mathrm m

7 0
3 years ago
Read 2 more answers
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