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3 years ago

Satellites are sent out into space to make "fly bys" of planets, moons, and objects in the outer solar system,

1 answer:

6 0

You'd have to say that the statement is false. It's a matter of wording.

The things called "satellites" are designed to enter orbit of something ...
usually the Earth, but it could be another body.

The spacecraft that are designed to "fly by" something and then keep going
are usually called "space probes", not "satellites".

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When you sit in a chair, your body exerts a downward force on the chair. What

Ahat [919]

I feel like the answer would be B. The chair pushes down on the floor becuase the question says when you sit in a chair, your body exerts a downward force on the chair so it would be pushing downward meaning that the chair would also go down making it push onto the floor.

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3 years ago

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A converging lens of focal length 20 cm is placed in contact with, and to the left of, a diverging lens of focal length 30 cm. I

scZoUnD [109]

Answer:

Magnification will be equal to 3

Explanation:

We have given focal length of the converging lens $F_1=20cm$

Focal length of the diverging lens $F_2=30cm$

Object is placed 40 cm to the length of the converging lens d = 40 cm

Combination of the focal length will be equal to

$\frac{1}{F}=\frac{1}{F_1}+\frac{1}{F_2}$

$\frac{1}{F}=\frac{1}{20}+\frac{1}{-30}=\frac{1}{20}-\frac{1}{30}=\frac{1}{60}$

F = 60 cm

So combination of the focal length will be 60 cm

Magnification is given by

$M=\frac{F}{F-d}=\frac{60}{60-40}=3$

So magnification will be equal to 3

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3 years ago

Which equation correctly relates mechanical energy, thermal energy and total of energy when there is friction present in the sys

agasfer [191]

Answer:

E total = ME + E thermal

Explanation:

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3 years ago

1. What layer of the Earth is<br> flowing, solid and plastic?

melisa1 [442]

Answer:

The mantle

Explanation:

The mantle is a plastic solid of varying densities which allow convection currents to flow molten rock towards the earth's surface resulting in volcanic activity, tectonic plate movement, earthquakes, and movement of continents.

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3 years ago

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You add 50 mL of water at 20°C to 200 mL of water at 70°C. What is the most

Irina-Kira [14]

Answer:

50*

Explanation:

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3 years ago

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