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3 years ago

True or False: A nail with a wire wrapped around it is an electromagnet.

2 answers:

7 0

Answer:Search ResultsBy simply wrapping wire that has an electrical current running through it around a nail, you can make an electromagnet. When the electric current moves through a wire, it makes a magnetic field. ... You can make a temporary magnet by stroking apiece of iron or steel (such as a needle) along with a permanent magnet.

Explanation:

Lina20 [59]3 years ago

3 0

Answer:

It is True

Explanation:

By simply wrapping wire that has an electrical current running through it around a nail, you can make an electromagnet. When the electric current moves through a wire, it makes a magnetic field. If you coil the wire around and around, it will make the magnetic force stronger, but it will still be pretty weak.

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Greenhouse effect in a sentence and word to study

Natasha_Volkova [10]

The greenhouse effect is when Earth's atmosphere gets surrounded with gasses causing the Earth to warm up.

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3 years ago

In the Lewis structure for a molecule, one of the nitrogen atoms shares six electrons with a carbon atom and has two electrons t

lutik1710 [3]

Answer: option D. triple bond and one lone pair

Explanation:

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3 years ago

Calculate the molarity of 65.3 grams of sugar(342.3 g/mol), c12h22011 in 750 ml of solution.

k0ka [10]

Answer:

0.254 M

Explanation:

If the formula mass of sugar is 342.3 g/mol, and there are 65.3 g, then there are 65.3/342.3=0.190768 mol.

Also, 750 mL = 0.750 L.

molarity = (moles of solute)/(liters of solution)

molarity = 0.190768/0.750 = 0.254 M

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2 years ago

...............………...mkmlkml;m

bagirrra123 [75]

Answer:

390

Explanation:

Specific heat capacity= heat/mass × temperature

$x = 2925 \div 0.5 \times 15 = 390$

Remember you convert gram into kilogram and 1 gram =0.001 kilogram

5 0

3 years ago

Which of the following objects would take you the greatest amount of force to accelerate?

horsena [70]

Complete question is;

Which of the following object would take you the greatest amount of force to accelerate.

A) a soccer ball with a mass of 0.5 kg

B) a refrigerator with a mass of 200 kg, C) a bike with a mass of 25 kg

D) a car with a mass of 5,000 kg,

Answer:

D) a car with a mass of 5,000 kg

Explanation:

Formula for force is;

F = ma

Where;

F is force

m is mass

a is acceleration

Now, Force is directly proportional to the acceleration and mass.

Thus, the higher the mass, the greater the force.

Thus, the object that will require the most force is the one that has the highest mass.

Looking at the options, the one with the highest mass is option D.

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3 years ago