3 years ago

Identify the materials necessary to create an electromagnet.

Physics

2 answers:

agasfer [191]3 years ago

8 0

The answer is A.
Power source, metallic core, and electrical conductor.
I just took the test.

tekilochka [14]3 years ago

4 0

I think its A power source metallic core and electrical conductor

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The density of air at room temperature is about 1.2 g/L. This is the same as

Verdich [7]

The correct answer is
<span>C) 1200 g/m3.

Let's see why. The relationship between liters and cube decimeters is
</span> $1 L = 1 dm^3$
Therefore,
$1 g/L= 1 g/dm^3$
However, we also know that
$1 dm^3 = 10^{-3} m^3$
Therefore,
$1 L = 10^{-3} m^3$
and
$1 \frac{g}{L}= 1 \frac{g}{10^{-3} m^3} =1 \cdot 10^3 \frac{g}{m^3} =1000 \frac{g}{m^3}$

Therefore, the density of the problem $1.2 g/L$ becomes
$d=1.2 g/L=1200 g/m^3$

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3 years ago

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Answer:

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6 0

3 years ago

What kind of chemical reaction does the chemical equation sodium + chlorine sodium chloride represents

Pavlova-9 [17]

It represents combustion.

5 0

3 years ago

An engine manufacturer makes the claim that the engine they have developed will, on each cycle, take 100J of heat out of boiling

Alborosie

Answer:

Explanation:

Intake heat, QH = 100 J

output heat, Qc = 20 J

Work, W = 80 J

TH = 100°C = 373 K

Tc = 10°C = 283 K

TH/ Tc = 373 / 283 = 1.318

QH/Qc = 100 / 20 = 5

for a heat engine, those ratios should be same. so temperature is not correct.

4 0

4 years ago

When hydrogen shares electrons with oxygen, the outermost shell of the hydrogen atoms are full with :

Alja [10]

Hydrogen is written as H2 and oxygen is written as O2

When they bond it is a covalent bond.

Hydrogen has 1 negative electron , which would attract one from oxygen, so its outer shell would have 2 electrons.

Oxygen outer shell holds 8 electrons.

The answer is

2 and 8

6 0

3 years ago

Read 2 more answers