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Airida [17]
3 years ago
7

What is the heat extracted from the cold reservoir for the refrigerator?

Physics
1 answer:
zaharov [31]3 years ago
7 0
What is the heat extracted from the cold reservoir for the refrigerator shown in(Figure 1) ? Assume that W1 = -123J and W2 = 88J . 

<span>Qc= _________ </span>

<span>Part B 
</span>
K=105J
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If a farsighted person has a near point that is 0.600 mm from the eye, what is the focal length f2f2f_2 of the contact lenses th
Readme [11.4K]

Answer:

0.22mm

Explanation:

A far sighted person is a person suffering from long sightedness i.e such individual can only see far distant object clearly but not near distant object. The defect is corrected using convex lens.

Since convex lens is used, the focal (f) length of the lens is positive and the image distance (v) is also positive.

Using the lens formula,

1/f = 1/u + 1/v

Where u is the object distance = 0.35mm

v = 0.6mm

1/f = 1/0.35+1/0.6

1/f = 2.86 + 1.67

1/f = 4.53

f = 1/4.53

f = 0.22mm

The focal length of the contact lenses will be 0.22mm

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3 years ago
A skier halfway between the top and bottom of a hill. Which statement best describes the skier?
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Answer: The skier has potential and kinetic energy.

Explanation: This is what I found from a different user on this website

5 0
3 years ago
Calculate the kinetic energy of a 750 kg compact car moving 50 m/s.
k0ka [10]
935,500 joules because when we use the KE formula KE=1/2mv^2;
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KE=935,500 Joules
Hope it helps
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3 years ago
Birds sitting on a single power line don't get shocked. But if they were to place one foot on each of two lines, ___________ wou
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Current would flow between them and they would receive a terrible shock.
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3 years ago
Read 2 more answers
Atoms of which pair of elements will form metallic bonds in a compound?
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Answer:

B -- Cobalt and iron

Explanation:

<em>Hope this helps! Please let me know if you need more help or think my answer is incorrect. Brainliest would be MUCH appreciated. Have a wonderful day!</em>

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