Which of the following materials allows charges to flow easily?A. wood
B. an electrical conductor
C. glass
D. an electrical insulator

Answers

Answer 1

Answer:

Answer: Option (B) is the correct answer.

Explanation:

A conductor which allows the quick or easy movement of charges through it is known an electrical conductor.

For example, copper is a good conductor of heat and electricity.

Whereas wood is a non-conductive substance as it does not allow the movement of charges through it. Thus, wood is a non-conductive in nature.

Glass is a poor conductor of electricity as it inhibits the flow of free movement of electrons through it.

Insulators are the substances or material in which there is also no movement of electric charges or very little movement of electric charges.

Thus, we can conclude that out of the given options, an electrical conductor allows charges to flow easily.

Answer 2

Answer: the correct answer is b

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4. Which of the following best describes Kinetic Energy?Stored energy due to positionEnergy of motionForce applied over a distanceA push or pull exerted on an object

How is acid Rain formed

Answers

Acid rain is formed by chemical reactions. This occurs when compounds like nitrogen oxides and sulfurs are exposed into the air. These substances can rise up high into the air and mix with water, oxygen and other chemicals and form into acid rain.

Which of the following is NOT an early sign of heat illness?Dizziness
Headache
Flushed face
Excessive sweating
Struggling to perform

Answers

Struggling to perform is not an early sign of heat illnesses.

There are times when the body system will be unable to dissipate heat effectively. When this happens, heat illness bounds to occur.

Also, heat illnesses tend to occur when the balance of salt and water in the body becomes unbalanced, the temperature rises unexpectedly or the sweet couldn't keep an individual cool.

Some of the early signs includes Headache, dizziness, Muscle cramps, weak pulse among other related symptoms.

Based on the above explanation, we can see that struggling to perform is not an early sign of heat illnesses.

Learn more at: brainly.com/question/19609187

The answer is struggling to perform

Which object carries the greatest amount of kinetic energy?

Answers

That Depends
The Object With Greater Mass Has Greater Amount Of Kinetic Energy

I need help I can't solve it and I'm struggling badly. Justin weighs 185 lb. and decides to climb a staircase that has a vertical distance of 12 m. He climbs the stairs in 12.7 seconds. Calculate his work:

Answers

Answer:

Power is work/time - not needed here

W(work) = F * D force * distance

Here W = M g h

Since 2.20 lb is equivalent to 1 kilogram mass

W = 185 lb / 2.20 lb/kg * 9.80 m/s^2 * 12 m = 824 Joules

note that a pound is a unit of force and a kilogram is a unit of mass

An atom of the element chromium has an atomic number of 24 and a mass number of 52. How many electrons are in an uncharged atom of chromium?

Answers

Chromium is represented by the element Cr with an atomic number of 24 and a molar mass of 52 gram per mole. The number of protons in the Chromium atom is the atomic number, so it has 24 protons. And the protons of chromium atom is equal to the number of electrons, so 24 electrons.

Answer:

Explanation:

What is the potential energy of a 2-kilogram potted plant that is on a 1 meter-high plant stand?

Answers

Potential energy is the energy stored by an object due to its position or arrangement.

The potential energy of the potted plant is 19.6 joule.

What is the potential energy?

Potential energy is the energy stored by an object due to its position or arrangement.

It can be given as,

$U=mgh$

Here, $m$ is the mass of the object, $g$ is the gravitational force experienced by the object and $h$ is the height.

Given information-

The mass of the potted plant is 2 kilogram.

The height of the plant stand is 1 meter.

The value of the gravity force is 9.81 meter per second squared on the surface of the earth.

To find the potential energy put the values in the above formula as,

$U=2*9.81*1\nU=19.6$

Hence the potential energy of the potted plant is 19.6 joule.

Learn more about the potential energy here;

brainly.com/question/1242059

Final answer:

The potential energy of a 2-kilogram potted plant on a 1 meter-high plant stand is 19.6 J.

Explanation:

The potential energy of a 2-kilogram potted plant on a 1 meter-high plant stand can be calculated using the gravitational potential energy formula:

PE = mgh

Where: