Physics High School

An object is located 20.0 cm from a convex lens. The lens focuses light at a
distance of 10.0 cm. What is the image distance?

A. 6.67 cm
B. -6.67 cm
C. -20.0 cm
D. 20.0 cm

Answers

Answer 1

The Answer Is :  D. 20.0 cm

My Reason : These types of problems can all be solved using the lens or mirror equation.

1/20 +1/q= 1/10

q=20 cm

The image is formed behind the lens at 2f or the center of curvature.

It is real, inverted, and the same size as the object

Answer 2

The Answer Is: D. 20.0 cm

Explanation: I did the test :)

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Answers

Answer:

p = 4000 kg-m/s

Explanation:

Given that,

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[tex]p=200\times 20\\\\p=4000\ kg-m/s[/tex]

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state and explain the disadvantages of anomalous expansion of water​

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Answer:

я не знаю старайся изо всех сил

Explanation:

[tex]\huge{\mathbb{\tt { QUESTION↓}}}[/tex]

[tex]\color{green}{\tt State \: and \: explain \: the \: disadvantages}[/tex]

[tex]\color{green}{\tt { of \: anomalous \: expansion \: of \: water}}[/tex]

[tex]\huge{\mathbb{\tt {ANSWER↓}}}[/tex]

[tex]{\boxed{\boxed{\tt { DISADVANTAGES \: of \: anomolous \: expansion \: of \: water }}}}[/tex]

Since the maximum density can be found for a positive temperature, water's own weight will prevent it from freezing from the bottom up. However, the anomalous expansion of water has some negative consequences. ... As the water freezes it expands and can rip pipes open.

[tex]{\boxed{\boxed{\tt { What \: is \: the \: state \: of \: anomalous \: expansion \: of \: water? }}}}[/tex]

The anomalous expansion of water is an abnormal property of water whereby it expands instead of contracting when the temperature goes from 4o C to 0o C, and it becomes less dense. The density is maximum at 4 degree centigrade and decreases below that temperature as shown in graph

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