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Anika [276]
3 years ago
6

Telescopes are instruments that can magnify very small objects. Truth or false?

Chemistry
2 answers:
lutik1710 [3]3 years ago
6 0
False. that’s a microscope
OlgaM077 [116]3 years ago
5 0

Answer:

False

Explanation:

Magnifying glasses magnify small objects.

Telescopes magnify large objects from far away

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Determine the number of significant figures in 478 cm​
Grace [21]

Answer:

There are 3 significant figures on this one.

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3 years ago
An atom has 18 protons, 18 electrons, and 20 neutrons. This atom has _____.
Lera25 [3.4K]

an atom that has 18 protons, 18 neutrons and 20 neutrons. This atom has mass number of 38

mass number is calculated as number of protons + number on neutrons

therefore the mass number of the atom = 18+20= 38

Since the atom has a electronic configuration of 2.8.8,the atom cannot be negatively or positively charged because it is stable.

The atomic number of the atom is 18 since atomic number is equal to number of protons

4 0
3 years ago
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What was the 'elixir of life' ​
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A magical or medicinal potion/solution
4 0
3 years ago
25 points please help
maxonik [38]

Answer : Option (A) Accelerator 2 model has the lowest percentage of energy lost as waste.

Solution : Given,

For Accelerator 1 model,

Input energy = 2078.3 J

Wasted energy = 663.1 J

Output energy = 1415.2 J

For Accelerator 2 model,

Input energy = 7690.0 J

Wasted energy = 2337.5 J

Output energy = 5353.5 J

For Accelerator 3 model,

Input energy = 4061.9 J

Wasted energy = 2259.6 J

Output energy = 1802.3 J

Formula used for lowest percentage of energy lost as waste is:

% energy lost as waste = (Total energy wasted / Total input energy )  ×  100

For Accelerator 1 model,

% energy lost as waste = \frac{663.1}{2078.3}\times100 = 31.90%

For Accelerator 2 model,

% energy lost as waste = \frac{2337.5}{7690.0}\times100 = 30.39%

For Accelerator 3 model,

% energy lost as waste = \frac{2259.6}{4061.9}\times100 = 55.62%

So, we conclude that the Accelerator 2 model has the lowest percentage of energy lost as waste.



6 0
3 years ago
How many inches are in 25.8 cm
NeTakaya

Answer:

10.1574803 inches

Explanation:

Here you go

6 0
3 years ago
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