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inysia [295]
3 years ago
11

Yaşam alanlarında enerji tasarrufu​

Physics
1 answer:
siniylev [52]3 years ago
4 0

(Forgive me if this is wrong I don't speak Turkish)

Enerji tasarrufu nasıl yapılır

Beklemedeki cihazları kapatın.

Akıllı bir termostat takın.

Termostatınızı kısın.

Verimli cihazlar satın alın.

Yeni bir kazan takın.

Giysileri daha düşük sıcaklıkta yıkayın.

Su konusunda daha akıllı olun.

Çift cama yatırım yapın.

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A person 1.8m tall stands 0.75m from a reflecting globe in a garden.
Maru [420]

Answer:

1. The image of the person is 1.41 m, virtual and formed at the back of the surface of the globe.

2. The person's image is 3.38 m tall.

Explanation:

From the given question, object distance, u = 0.75 m, object height = 1.8 m, radius of curvature of the reflecting globe, r = 8 cm = 0.08 m.

f = \frac{r}{2} = \frac{0.08}{2} = 0.04 m

1. The image distance, v, can be determined by applying mirror formula:

\frac{1}{f} = \frac{1}{u} + \frac{1}{v}

\frac{1}{0.04} = \frac{1}{0.75} + \frac{1}{v}

\frac{4}{100} - \frac{75}{100} = \frac{1}{v}

\frac{1}{v} = \frac{4 - 75}{100}

  = - \frac{71}{100}

⇒ v = -\frac{100}{71}

      = - 1.41 m

The image of the person is 1.41 m, virtual and formed at the back of the surface of the globe.

2.  \frac{image distance}{object distance} = \frac{image height}{object height}

  \frac{1.41}{0.75} = \frac{v}{1.8}

v = \frac{2.538}{0.75}

  = 3.384

v = 3.38 m

The person's image is 3.38 m tall.

6 0
3 years ago
Why do astronomers use the word on to describe angles on the sky rather than angles in the sky?
Sever21 [200]
<span>The use of the word on instead of the word in when referring to the angular distance between celestial objects comes about because all of the objects appear to be on the celestial sphere and at an indeterminable distance. While we know that objects are at different distances in the sky, their distance from Earth is irrelevant in determining the angular distance between the two objects as viewed from Earth.</span>
8 0
3 years ago
A sailfish swims 120 km/hr. How far will it travel in 8.0 minutes?
Rasek [7]

Answer:

16km

Explanation:

First change the minutes into hours then multiply by the distance.

(8÷60)×120=16km

5 0
3 years ago
What heavy element was the chernobyl nuclear accelarators supposed to make?​
Gala2k [10]

Answer

plutonium

Explanation:

brainliest please

6 0
2 years ago
A trunk is dragged 3.0 meters across an attic floor by a force of 2.0N how much positive work is done on the trunk
Novay_Z [31]

The formula for work is

F*d

Therefore work=2.0N*3.0=6N*m

8 0
3 years ago
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