Velocity and speed are both measurements of how fast something is moving however velocity is different from speed because
A) velocity and speed are the same thing
B) velocity is usually faster than speed
C) The velocity of an object also tells us the direction something is moving
D) velocity is how fast something is changing its speed

Answer:

A

Explanation:

i think

Answer:

Fractional distillation is essentially the same as simple distillationexcept that a fractionating column is placed between the boiling flask and the condenser. The fractionating column is usually filled with glass or plastic beads. These beads improve the separation between the liquids being distilled.

Explanation:

Answer:

Explanation:

The difference between simple and fractional distillation is the number of times that the liquid is vaporized and condensed. Simple distillation condenses the liquid once, so the boiling points of the two liquids must be far apart to make it efficient. The number of simple distillations in a fractional distillation apparatus depend on the length and efficiency of the fractionating column. The process is the same; the difference is mainly one of iteration.

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Answer: 1

Explanation:

The number of times a machine increases a force exerted on it The input force will be the same as the output force.

Answer:

153.6771 amu

Explanation:

From the question given above, the following data were:

Isotope A:

Mass of A = 114.3789 amu

Abundance (A%) = 64.23%

Isotope B:

Mass of B =.?

Abundance (B%) = 100 – A%

Abundance (B%) = 100 – 64.23

Abundance (B%) = 35.77%

average atomic mass of Element Y = 128.4359 amu

The mass of the 2nd isotope (i.e isotope B) can be obtained as follow:

Average atomic mass = [(Mass of A × A%)/100] + [(Mass of B × B%)/100]

128.4359 = [(114.3789 × 64.23)/100] + [(Mass of B × 35.77) /100]

128.4359 = 73.4656 + (Mass of B × 0.3577)

Collect like terms

128.4359 – 73.4656 = Mass of B × 0.3577

54.9703 = Mass of B × 0.3577

Divide both side by 0.3577

Mass of B = 54.9703 / 0.3577

Mass of B = 153.6771 amu

Therefore, the mass of the 2nd isotope is 153.6771 amu

Answer:

the experimental variable

Explanation:

Answer:

If you pour a spoonful of salt into a glass of water, the sodium will react with the water and increase the mass.  

Explanation:

Answer:

76

120

Explanation:

the upper number is the sum of Protons and neutrons. and the lower one is the number of Protons! to find the number of neutrons, all you have to do is: upper number-lower number=number of neutrons

Answer:

FALSE

Explanation:

Answer:

Suspension!

Explanation:

A suspension is a heterogeneous mixture in which the solute particles do not dissolve, but get suspended throughout the bulk of the solvent, left floating around freely in the medium. The other answers are homogeneous, not heterogenous.

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Answer:

A

Explanation:

chemistry is used in all areas of life

Answer: A

Explanation:

just got it right

Answer:

The heating of the Earth's surface and atmosphere by the sun drives convection within the atmosphere and ocean. This convection produces winds and ocean currents. The greater the pressure differences between a low-pressure area and a high-pressure area, the stronger the winds. I hope this helps

The sun heats the air near the equator of the earth, it becomes less dense and rises upward. As warm air rises, it cools and gets less dense than the air around it.

Convection can be d defined as the transfer of heat from one place to another due to the movement of heat or fluid. Convective heat transfer involves the processes of conduction as well as advection.

Gases and liquids can not be good conductors of heat under normal conditions, but they can easily transfer heat.

Convection occurs through diffusion or advection but does not take place in solids, as there is no movement of its constituent particles happens. The diffusion of heat in solids is known as thermal conduction.

The heat transfer that occurs between a surface and a liquid that is in contact with the surface is convection heat transfer.  

The Sun provides the energy for the convection in the ocean and produces ocean currents. There are two kinds of ocean currents: one is surface currents and the other deep currents.

Learn more about convection, here:

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Answer:

69.72344108

Gallium

Explanation:

Answer:

the large object moving quickly because the more the mas the more kenetic energy

Answer:

I think it a or c yea a or c

Answer: temperature liquefaction

Explanation: At the exact time the only used method or strategy the division of helium from natural gas is low temperature liquefaction

Answer:

D:salt this is the correct answer

answer : the correct option is, (B) 2, 3 and 6.

Answer:

b

Explanation:

i took the test

Answer:

a. atom

Explanation:

 google

Answer:

The final step of the scientific method is to communicate the results​

Explanation:

An electron has a negative charge and a proton is a positively charged particle. Electric field lines are used to express the direction of the electric field. For a positive charge, it is outwards while for a negative charge it is inwards. The attached figure shows the electric field lines between a proton and an electron. The field lines emerge from proton and terminate at electron.

The electrical force between charges is given by :

[tex]F=k\dfrac{q_1q_2}{r^2}[/tex]

r is the distance between charges

The force is directly proportional to the product of charges. It means that if the product of electrical charge increased, it means that the electrical force will increase proportionally.

Answer:

inner core

Explanation:

Answer:

The outer core.

Explanation:

There is liquid metal, like iron, which creates electric currents going through the ground. When the Earth rotates on it's axis, it creates a magnetic field.

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Answer:

I don't understand what you are asking

Metals are ductile,malleable,good conductors and shiny

Answer:

You would have find its valency

Answer:

cannot be used to produce energy in reactors.  

Explanation:

Currently, there is no reactor that can allow the use of nuclear fusion, although nuclear plants use nuclear fission reactors.

Nuclear fusion happens when thousands of atoms collide with each other when they are in the midst of extreme conditions of literature and pressure. This collision causes the atoms to fuse, creating another element. The process releases amounts of light and heat, promoting a high release of energy. This whole process occurs without the release of CO2 into the atmosphere, without the release of toxic waste and without the risk of explosions, which makes nuclear plants have a strong interest in building a reactor to use this type of energy. For this reason, scientists from different countries have collaborated with each other on a project called Iter, which seeks to build a reactor and achieve the first reaction in 2025.