3 years ago

Which does not contain a lens?

Physics

1 answer:

statuscvo [17]3 years ago

8 0

C a glass eye is my best guess because its all glass and a fake eye not actually working so thats my theroy.

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Suppose that John lives on a square block that is 180 yards per side, and in the evenings, he walks with his dog around the bloc

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Answer:

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Explanation:

Although I'm not sure about the second one, I'm sure the first one is A

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3 years ago

A spring has a force constant k, and an object of mass m is suspended from it. The spring is cut in half and the same object is

kenny6666 [7]

Answer:

$f2/f1 = \sqrt{2}$

Explanation:

From frequency of oscillation

$f = 1/2pi *\sqrt{k/m}$

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$f1 = 1/2pi *\sqrt{k/m}$

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3 years ago

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3 years ago

What is the pressure exerted by a column of fresh water 10m high (p=1000kg/m3 and g=10m/s)

alexira [117]

Height (h) = 10 m
Density (ρ) = 1000 Kg/m^3
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We know, pressure in a fluid = hρg
Therefore, the pressure exerted by a column of fresh water
= hρg
= (10 × 1000 × 10) Pa
= 100000 Pa

Answer:

100000 Pa

Hope you could understand.

If you have any query, feel free to ask.

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