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salantis [7]
3 years ago
14

Pedal Power A person in good physical condition can put out 95 W of useful power for several hours at a stretch, perhaps by peda

ling a mechanism that drives an electric generator. Neglecting any problems of generator efficiency and practical considerations such as resting time: How many people would it take to run a 4.64–kW electric clothes dryer?
Physics
1 answer:
stiv31 [10]3 years ago
5 0

Answer:

48 people would it take to run a 4.64 kW electric clothes dryer.

Explanation:

Given:

Pedal power A W_{1} = 95 W

Electric clothes dryer power W_{2} = 4640 W

For finding the number of person n equals :

   n = \frac{W_{2} }{W_{1} }

   n = \frac{4640}{95}

   n = 48.84

Therefore, 48 people would it take to run a 4.64 kW electric clothes dryer.

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The element Ne, neon, has ____ (number) complete shells having its ____ electrons in second _____.
KatRina [158]

Answer:

2, 8 and shell

Explanation:

Neon as atomic number 10. Since for each shell, electrons equal 2n².

When n = 1, 2n² = 2(1)² = 2

When n = 2, 2n² = 2(2)² = 8

So it fills both the first and second shell with 2 and 8 electrons respectively to achieve its stable atomic state. The rest of the 8 electrons go into the second shell because the first shell has achieved its stable dual configuration of two electrons. The next shell requires a maximum of 8 electrons to achieve stability so, the remaining electrons fill it up to achieve the stable octet configuration.

8 0
3 years ago
Which of the following lists are all renewable resources?
earnstyle [38]

The answer is A.

Hydroelectric, which is usually generating electricity through use of a dam.

Solar, energy from the Sun.

Biomass, organic material formed from plant matter.

3 0
3 years ago
Shows an oil tank that has a rectangular base of dimensions 2.4 m by 1.5 m. oil depth of oil 2.4 m 1.5 m
Nutka1998 [239]

Answer:

45 000 N

Explanation:

pressure \:  =  \frac{force}{area}  \\ density \times g \times height =  \frac{force}{area}  \\ (850)(9.81)(1.5) =  \frac{force}{(2.4)(1.5)}  \\ force \:  = 45000n \: (3sf)

7 0
3 years ago
Once the crate in sample problem d is in motion, a horizontal force of 53 n keeps the crate moving with constant velocity find t
IgorC [24]
Thank you for posting your question here at brainly. Below is the solution. I hope it helps. 

m=24 kg, Ff=53 N, g=9.8 m/s^2,
use the formula Fg<span> = mg,   F</span>g=24*9.8,
solve for Fg, Fg=235.2 N,
then use the formula Ff<span> = ต</span>kFn, 53=235.2ตk,
solve for ตk, ตk<span>=.23</span>
4 0
3 years ago
Read 2 more answers
A beam of light passes through a liquid into air. Angle 1, angle of
Ede4ka [16]

Answer: 1.57

Explanation:

This described situation is known as Refraction, a phenomenon in which light bends or changes its direction when passing through a medium with a index of refraction different from the other medium.  

In this context, the index of refraction is a number that describes how fast light propagates through a medium or material.  

According to Snell’s Law:  

n_{1}sin(\theta_{1})=n_{2}sin(\theta_{2}) (1)  

Where:  

n_{1} is the first medium index of refraction (the value we want to know)

n_{2}=1 is the second medium index of refraction (air)  

\theta_{1}=23\° is the angle of incidence

\theta_{2}=38\° is the angle of refraction

Now, let's find n_{1} from (1):

n_{1}=n_{2}\frac{sin \theta_{2}}{sin \theta_{1}} (2)  

Substituting the known values:

n_{1}=1\frac{sin(38\°)}{sin(23\°)}  

Finally:

n_{1}=1.57  

3 0
3 years ago
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