What is a magnet? Explain what it is please.

Answers

Answer 1

Answer: A magnet is a material usually composed of iron, ore or another metallic alloy that has its component atoms so ordered that the material exhibits properties of magnetism, such as attracting other metal alloy objects or aligning itself in an external magnetic field.

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Law of action-reaction

Answers

Answer:

Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object.

ETHANHUNT PLS HELPA light bulb converts electrical energy into light energy and also some thermal energy. The amount of electrical energy is 50 Joules before the conversions.
What is the total amount of energy from before the conversions to after the conversions?

45 Joules because some energy is lost when it is put off as heat.

100 Joules because you start with one form of energy and end up with two forms, so the amount of energy doubles.

50 Joules because as energy converts from one form to another, it cannot be created or destroyed during the conversion.

55 Joules because as more electricity comes in to the light bulb, the Joules increase.

Answers

The answer is 45 Joules because some energy is lost when it is put off as heat.

When energy is converted there will always be less after the conversion than before, because of the thermal energy loss. Just like it is easier to push something if it is on ice than if it is on grass. That is because there is less friction on the ice to convert some of the energy into thermal energy (or heat)

I hope this helped!! :)

The correct answer is 50 Joules because as energy converts from one form to another, it cannot be created or destroyed during the conversion

The density of gold is 19.3 g /cm cubed The density of iron pyrite is 5.0 g /cm cubed. Is a nugget of iron pyrite and a nugget of gold each have a mass of 50 g what can you conclude about the volume of each nugget

Answers

If you clear volume in the density equation:

$\rho = (m)/(V)\ \to\ V = (m)/(\rho)$

The greater the density the lower the volume. This means, the volume of gold nugget will be smaller than the volume of iron pyrite nugget.

$V_(gold) = (m)/(\rho) = (50\ g)/(19.3\ g/cm^3) = \bf 2.59\ cm^3$

$V_(iron) = (m)/(\rho) = (50\ g)/(5.0\ g/cm^3) = \bf 10\ cm^3$

Is ammonia a compound or an element?

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a ammonia is a compound

List the atomic numbers of the elements in period 2

Answers

Answer:

hydrogen,helium, lithium,berallium,boron, carbon, nitrogen, oxygen,fleurine

How might human activities change to compensate for a decrease in water supplies?Humans might build a factory.
Humans might build drainage systems.
Humans might extract more water from the ground.
Human behavior does not change because of the water cycle.

Answers

Answer: Humans might extract more water from the ground.

Explanation:

Humans may face the situations of unavailability of water supply. Majority of the human population is dependent upon the source of water like oceans, lakes, rivers, ponds and wells for their water supply.

But in the scarcity of water from the drainage supply by the water body human population should search for a relevant alternative such as groundwater. Groundwater is the underground reservoir of water. The water in the groundwater reservoir accumulates from the sources such as rainfall, snow melting, river and oceanic water.

Humans should search for groundwater reservoir for compensating the scarcity of water.

Humans might extract more water from the ground

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