1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
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

You might be interested in
HELLLP PLEASE || the graph below shows a conversion of energy for a skydive jumping out of a plane and landing safely on the gro
fenix001 [56]

Answer: I maybe wrong but i'm pretty sure its C) Kinetic energy

5 0
3 years ago
Which of the following happens to an object in uniform circular motion?
podryga [215]

Answer:

As an object moves in a circle, it is constantly changing its direction. ... Accelerating objects are objects which are changing their velocity - either the speed (i.e., magnitude of the velocity vector) or the direction. An object undergoing uniform circular motion is moving with a constant speed.

5 0
4 years ago
Which of the following is the FINAL step in a forecasting​ system?
Lelechka [254]

Answer:

gather the data needed to make the forecast

3 0
3 years ago
The electron gun in an old TV picture tube accelerates electrons between two parallel plates 1.4cm apart with a 28kV potential d
yulyashka [42]

Answer:

a)   F = 3.2 10⁻¹⁰ N , b)       v = 9.9 10⁷ m / s

Explanation:

a) The electric force is

       F = q E

The electric field is related to the potential reference

     V = E d

     E = V / d

Let's replace

    F = e V / d

Let's calculate

    F = 1.6 10⁻¹⁹ 28 10³ / 1.4 10⁻²

    F = 3.2 10⁻¹⁰ N

b) For this part we can use kinematics

          v² = v₀ + 2 a d

          v = √ 2 ad

Acceleration can be found with Newton's second law

        e V / d = m a

        a = e / m V / d

        a = 1.6 10⁻¹⁹ / 9.1 10⁻³¹ 28 10³ / 1.4 10⁻²

        a = 3,516 10⁻¹⁷ m / s²

Let's calculate the speed

       v = √ (2 3,516 10¹⁷ 1.4 10⁻²)

       v = √ (98,448 10¹⁴)

       v = 9.9 10⁷ m / s

3 0
3 years ago
We have a 10kg ball and a 15kg ball. We drop them from the top of the science building while objects are at rest and there is no
Mashcka [7]
They will hit the ground at the same time, as mass is negligible when calculating the acceleration of gravity when there is no air resistance
3 0
3 years ago
Other questions:
  • A car drives on a highway with speed of 68mi/h. what is this speed in km/h?
    5·1 answer
  • What are the formulas to calculate acceleration A. velocity and time B. displacement and time C. Change in distance and time D.
    15·1 answer
  • when you hold a warm bowl of soup the temperature of the palms of your hands increases this is an example of
    7·1 answer
  • A node is a point on a standing wave that has no displacement from the rest position. at the nodes, _____.
    15·2 answers
  • A series RLC circuit with L = 13 mH, C = 3.6 µF, and R = 3.2 ohms is driven by a generator with a maximum emf of 120 V and a var
    11·1 answer
  • As a substance condenses, its temperature does not change. How does the potential energy of the molecules of the substance chang
    12·1 answer
  • A 2 kg block is pushed against a spring (k = 400 N/m), compressing it 0.3 m. When the block is released, it moves along a fricti
    12·1 answer
  • Draw a closed circuit diagram of the battery of 2 cells arranged in series, connecting wire, switch and bulb; mark the direction
    13·1 answer
  • Out of a pair of identical springs of force constants, 240Nm-1 one is compressed by 10 cm and the other is stretched by 10 cm. W
    13·2 answers
  • I have got a project about hacks so i need help
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!