Why is gas able to flow

Answers

Answer 1

Answer: It has enough energy to move around. Also because its particles float around and aren't packed tightly together. Its particles move freely.

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What determines the type of element that an atom makes?

Answers

Only the number of protons determine the type of atom. Elements can have more or less neutrons and electrons and still be the same general type of element.

The number of protons, neutrons and electrons an atom has determines what element it is. Hydrogen, for example, has one proton, no neutrons and one electron; the element sulfur has 16 protons, 16 neutrons and 16 electrons.

What is groundwater flow

Answers

Part of the steam flow that has infiltrated the ground, has entered the phreatic zone and has been discharged into a stream channel.

Groundwater is water that is found underground in cracks and spaces in the soil ,sand and rocks

Balance the following equations:
Al₂O3 + O₂ --
Ah + O₂

Answers

Answer:

2Al2O3 → 4 Al + 3 O2

Explanation:

Whitch of the following are physical changes ? Rusting
Souring
Melting
Boiling
Freezing

Answers

Answer:

melting, freezing, and boiling are physical changes

Explanation:rusting and souring are ex. of chemical, not physical

Answer:

melting boiling frezzing

Explanation:

A vase with a mass of 0.800 kilograms falls from a height of 0.750 meters to a position of 0.500 meters above the floor. Ignoring frictional effects, the kinetic energy at the 0.500 position is _____.

Answers

Answer:

The kinetic energy at the 0.500 position is 1.96 J.

Explanation:

Mass of the vase = 0.800 kg

Height from where vase fallen = 0.750 m

Potential energy of vase at 0.750 m:

$P.E=mgh=0.800 kg* 9.8 m/s^2 * 0.750 m=5.88 Joules$

Kinetic energy of the vase at the point just before it was about to fell:

$K.E=0 J$ (absence of motion)

P.E + K.E = 5.88 J + 0 J = 5.88 Joules

Potential energy of vase at 0.500 m:P.E'

$P.E=mgh=0.800 kg* 9.8 m/s^2 * 0.500 m=3.92 Joules$

Kinetic energy of the vase at the point 0.500 m above the floor: K.E'

As we know, that sum of P.E and K.E remains constant.;

P.E' + K.E' = 3.92 J + K.E' = 5.88 J

K.E' = 5.88 J - 3.92 J = 1.96 J

The kinetic energy at the 0.500 position is 1.96 J.

Answer: The kinetic energy of vase at 0.500 m position is 1.96 J

Explanation:

Law of conservation of energy states that energy can neither be created nor be destroyed but it can only be transformed from one form to another form.

Here, the potential energy of the vase is getting converted into kinetic energy of the vase

So, calculating the potential energy of vase, we use the equation:

P = mgh

where,

m = mass of vase = 0.800 kg

g = acceleration due to gravity = $9.8m/s^2$

h = height of vase = (0.750 - 0.500) m = 0.250 m

Putting values in above equation, we get:

$P=0.800kg* 9.8m/s^2* 0.250m\n\nP=1.96J$

At 0.500 m, the potential energy gets converted to kinetic energy.

Kinetic energy of the vase = 1.96 J

Hence, the kinetic energy of vase at 0.500 m position is 1.96 J

How much energy is wasted as heat by an incandescent light globe

Answers

Electric current passes through a filament of an incandescent bulb, thereby increasing it temperature. When current flows, it contains electrons through the filament to produce light. Typically, incandescent light bulb consists of a glass enclosure that contains tungsten filament. The glass enclosure contains either a vacuum or an inert gas that serves as the filament protection from evaporating. Incandescent light bulbs contain a stem attached at to its base to allow the electrical contacts to run through the envelope without gas or air leaks.

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