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tester [92]
3 years ago
12

True or false: a fraction never indicates a ratio.

Physics
1 answer:
antoniya [11.8K]3 years ago
7 0
A fraction ALWAYS indicates a ratio.
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what happens to the period of revolution for the planets as they move farther away in position from the sun
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It increases. Mercury takes 88 days to orbit the sun once. The Earth takes a year. Pluto takes 248 years.
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3 years ago
Name TWO WEAKNESSES of the model pictured below
Nikolay [14]

Answer:

Here are a few:

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2) The planets will only line up like that once every 5200 years, making this very unrepresentative of their usual relations - although this does make their order in distance from the sun.

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4) If this is meant as a representation of the planets, then Pluto should not be there as it is now considered a planetoid.

5) The planets are incorrectly scaled both to each other and to the sun.

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3 years ago
What is meant by the statement that you don’t “own” the atoms that make up your body?
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Answer:

there are as many atoms in a normal breath of air as there are breathfuls of air in the atmosphere of the world

Explanation:

5 0
3 years ago
A flat coil of wire consisting of 20 turns, each with an area of 50 cm2, is positioned perpendicularly to a uniform magnetic fie
Nutka1998 [239]

Answer:

i = 0.5 A

Explanation:

As we know that magnetic flux is given as

\phi = NBA

here we know that

N = number of turns

B = magnetic field

A = area of the loop

now we know that rate of change in magnetic flux will induce EMF in the coil

so we have

EMF = NA\frac{dB}{dt}

now plug in all values to find induced EMF

EMF = (20)(50 \times 10^{-4})(\frac{6 - 2}{2})

EMF = 0.2 volts

now by ohm's law we have

current = \frac{EMF}{Resistance}

i = \frac{0.2}{0.40} = 0.5 A

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3 years ago
A 9 cm tall object is placed 16 cm from a converging lens forming an image at 13 cm. What is the height of the image?
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