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zysi [14]
3 years ago
5

Why cannot an athlete stop instantaneously when he reaches the end in after the race​

Physics
1 answer:
marta [7]3 years ago
3 0

Explanation:

because his lower body is in inertia of motion.

Hope it helps

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Photovoltaic cells: a) have become more economical to produce and use over the past 25 years. b) are the most efficient means of
Yanka [14]

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

8 0
2 years ago
a pot of boiling water on a hot stove demonstrates heat transfer by convention,conduction, and radiation. One similarity between
rjkz [21]
Well heat comes out from the stove and moved to the pot and is TOUCHING. So the heat transfer would be conduction because the heat moves from one object to another by TOUCHING.

The similarity between them is they both involve heat, there is many but that's a simple one
3 0
3 years ago
Read 2 more answers
PLSSS HELPP
photoshop1234 [79]

Answer:

Well, if you look up countries with the highest birth rates, also those countries poverty rates and what class the majority of the people are in then you should have a better understanding. Also, education is not passed through genes it is learned through expirience and being taught. Also being rich vs being poor probably doesn't have that big of an effect either. It is the living conditions.

Explanation:

5 0
3 years ago
Read 2 more answers
A possible means for making an airplane invisible to radar is to coat the plane with an antireflective polymer. If radar waves h
Marina CMI [18]

Answer:

The thickness is  t =  0.5615 \ cm    

Explanation:

From the question we are told that

    The wavelength of the of the rader waves is  \lambda =  2.92 \ cm

     The index of refraction of the polymer is  n  = 1.30

The thickness is mathematically represented as

             t =  \frac{\lambda }{4 n }

Substituting values

            t =  \frac{2.92}{4 *  1.30 }

          t =  0.5615 \ cm

6 0
3 years ago
State Pascal''s principle. Give and example of its use
BabaBlast [244]
Well, it is also known as the transmission of fluid pressure. So, it is a principle in fluid mechanics that says that pressure exerted anywhere in a confined incompressible fluid is transmitted equally in all directions throughout the fluid such as the the pressure variations.
4 0
4 years ago
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