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2 years ago

What type of energy does a pv cell create ?

Physics

2 answers:

swat322 years ago

7 0

I’m not exactly sure but I hope some one can answer it

Alex_Xolod [135]2 years ago

6 0

Answer: Solar Photovoltaic (PV) cells generate electricity by absorbing sunlight and using that light energy to create an electrical current. There are many PV cells within a single solar panel, and the current created by all of the cells together adds up to enough electricity to help power your school, home and businesses.

<em>--Cited from </em><u><em>Solar Schools</em></u>

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A Ferris wheel with 60 spokes has a diameter of 100 m. It makes one rotation every 60 seconds. Find the speed of the passengers

Doss [256]

Answer:

<em>The speed of the passengers is 5.24 m/s</em>

Explanation:

<u>Uniform Circular Motion </u>

It occurs when an object in a circular path travels equal angles in equal times.

The angular speed can be calculated in two different ways:

$\displaystyle \omega=\frac{v}{r}$

Where:

v = tangential speed

r = radius of the circle described by the rotating object

Also:

$\omega=2\pi f$

Where:

f = frequency

Since the frequency is calculated when the number of revolutions n and the time t are known:

$\displaystyle f=\frac{n}{t}$

The Ferris wheel has a diameter of 100 m and makes n=1 rotation in t=60 seconds, thus the frequency is:

$\displaystyle f=\frac{1}{60}\ Hz$

The angular speed is:

$\displaystyle \omega=2\pi \frac{1}{60} =\frac{\pi}{30} \ rad/s$

Now we calculate the tangential speed, solving this formula for v:

$\displaystyle \omega=\frac{v}{r}$

$v=\omega . r$

The radius is half the diameter, r=100/2=50 m:

$\displaystyle v=\frac{\pi}{30} . 50$

Calculating:

v = 5.24 m/s

The speed of the passengers is 5.24 m/s

7 0

3 years ago

A quarterback claims that he can throw the football a horizontal distance of 167 m. Furthermore, he claims that he can do this b

pychu [463]

Answer:u=42.29 m/s

Explanation:

Given

Horizontal distance=167 m

launch angle $=33.1^{\circ}$

Let u be the initial speed of ball

Range $=\frac{u^2\sin 2\theta }{g}$

$167=\frac{u^2\sin (66.2)}{9.8}$

$u^2=1788.71$

$u=\sqrt{1788.71}$

$u=42.29 m/s$

7 0

3 years ago

13. How many electrons does a complete third electron shell hold?

ale4655 [162]

Answer:

A) 8

<u>A complete third electron shell holds </u><u>8</u><u> electrons</u>

<u>---------------------------</u>

<u>hope it helps...</u>

<u>have a great day!!</u>

6 0

3 years ago

Two positive charged particles will ?

Vika [28.1K]

Answer:

make a negative

Explanation:

yep

6 0

3 years ago

Read 2 more answers

The equation for the speed of a satellite in a circular orbit around the earth depends on mass. Which mass?

katovenus [111]

<h3><u>Question: </u></h3>

The equation for the speed of a satellite in a circular orbit around the Earth depends on mass. Which mass?

a. The mass of the sun

b. The mass of the satellite

c. The mass of the Earth

<h3><u>Answer:</u></h3>

The equation for the speed of a satellite orbiting in a circular path around the earth depends upon the mass of Earth.

Option c

<h3><u> Explanation: </u></h3>

Any particular body performing circular motion has a centripetal force in picture. In this case of a satellite revolving in a circular orbit around the earth, the necessary centripetal force is provided by the gravitational force between the satellite and earth. Hence $F_{G} = F_{C}$ .