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Nadya [2.5K]
2 years ago
15

100 Points!!!

Physics
1 answer:
Kaylis [27]2 years ago
4 0

(1) The image of an object placed further from the lens than the focal point will be upside down and smaller than the object.

(2) When light rays reflect, they bounce back.

(3)  Images formed by a concave lens will look magnified.

(4) When light rays enter a different medium, they bend.

<h3>1.0 Object placed further from the lens than the focal point</h3>

The image of an object placed further from the lens than the focal point will be diminished and inverted.

Thus, the correct answer will be "upside down and smaller than the object".

<h3>2.0 What is reflection of light?</h3>

The ability of light to bounce back when it strike a hard surface is known as refection.

<h3>3.0 Image formed by concave lens</h3>

A concave lens is diverging lens is usually virtual, erect and magnified.

<h3>4.0 Refraction of light</h3>

The change in speed of light when it travels from medium to another medium is known as refraction. Refraction is also, the ability of light to bend around obstacles.

Learn more about reflection and refraction of light here: brainly.com/question/1191238

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The work done on a box is 532 joules. The force applied to the box was 48 N. What was the displacement of the box? *
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A heat pump operates on a Carnot heat pump cycle with a COP of 8.7. It keeps a space at 248C by consum-ing 2.15 kW of power. Det
Marizza181 [45]

Answer:

<em>Heat of the reservoir is 461.38 K or 188.1 °C</em>

<em>The heating load is 18.705 kW</em>

Explanation:

COP = 8.7

working temperature T_{h} = 248 °C = 248 + 273.3 = 521.3 K

work power W = 2.15 kW

reservoir temperature T_{c} = ?

heating load Q = ?

We know that

COP = Q/W

Q = COP x W = 8.7 x 2.15 = <em>18.705 kW</em>

Also,

COP = \frac{T_{h} }{T_{h}- T_{c}  } = \frac{521.3}{521.3- T_{c}  }

8.7 = \frac{521.3}{521.3- T_{c}  }

4535.31 - 8.7T_{c}  = 521.3

4535.31 - 521.3 = 8.7T_{c}  

4014.01 = 8.7T_{c}  

T_{c}  = 4014.01/8.7 = <em>461.38 K</em>

or 461.38 -273.3 = <em>188.1 °C</em>

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