someone please answer this, ill give you brainliest and your getting 100 points.

Answer:

The smooth surface of the CD causes wavelengths of light to scatter. The CD at this point acts somewhat like a prism splitting white light into the colors of the rainbow. This is called the visible spectrum of light and is composed of the colors red, orange, yellow, green, blue, indigo and violet.

Explanation:

Answer: The reflected wave has less energy

Explanation:

The incident wave would be the light wave before it comes in contact with the CD. Once the incident wave hits the CD, there is a reflected wave which will have some portion of energy from the incident wave. The reflected wave is a different color from the incident wave due to the reflected wave having less energy. Less energy means a different wavelength of visible light

Answer:

gravity

Explanation:

Answer: A

Explanation:Convection currents in the mantle Mantle convection is the very slow creeping motion of Earth's solid silicate mantle caused by convection currents carrying heat from the interior to the planet's surface. The Earth's surface lithosphere rides atop the asthenosphere and the two form the components of the upper mantle.

Answer:

B

Explanation:

Answer:

A little over a second

Explanation:

gravity pulls down on objects at a speed of 9.8 meters a second

Answer:

Changing the amplitude of a sound wave changes its loudness or intensity.

Explanation:

Constructive interference is what can make a sound louder, destructive interference will make a sound quieter. Two waves that add together may have different frequencies.

Answer:

Steel

Explanation:

It can easily join with a magnet as long as u place it close to the magnet

Answer:

Zinc

Explanation:

it is because it is in group 2

The resultant force acting on the balloon is 10,400 N.

The resultant force acting on the balloon is calculated by applying Newton's second law of motion as follows;

F = ma

where;

Mass of the helium gas = density x volume

                                       = 0.18 x 3000

                                       = 540 kg

Total mass of the balloon = 500 kg + 540 kg = 1,040 kg

Resultant force = mg

Resultant force = 1040 x 10 = 10,400 N

Learn more about resultant force here: https://brainly.com/question/25239010

Answer:

A

Explanation:

Voltage, V = Current, I x Resistance, R  (V is directly proportional to I where R is constant of proportionality)

This means that when Voltage is increased, Current increases and when voltage is decreased, current decreases (and the inverse is true). Through all this though, resistance remains constant regardless.

A colloid is a combination in which one material is suspended throughout another substance and contains scattered insoluble particles. Blood is a colloid solution.

A colloid is a combination in which one material is suspended throughout another substance and contains scattered insoluble particles. The whole combination is referred to as a colloidal solution.

A colloid contains a dispersed phase a continuous phase. The colloidal mixture must either not settle or settle extremely slowly.

The above property is shown by the blood. Hence blood is a colloid solution.

To learn more about the colloidal solution refer to the link;

https://brainly.com/question/14454579?referrer=searchResults

Answer:

heterogeneous , suspension

Explanation:  believe me or don't idc

Answer:

always repeats itself

Explanation:

hope this helps

Answer: Cosine function

Explanation:

All physical waves can be described as linear combinations of cosine and sine wave functions.

[tex]\textbf{Use equation of momentum}[/tex]

[tex]p=mv[/tex]

[tex]\text{momentum\ =\ mass x velocity}[/tex]

[tex]\textbf{Substitute in the values}[/tex]

[tex]5000 \times 75 = 375,000 \text{\ kg\ km/hr}[/tex]

[tex]4200 \times 75 = 315,000 \text{\ kg\ km/hr}[/tex]

[tex]\textbf{The\ small\ sports\ car\ will\ have\ the\ most\ momentum.}[/tex]

Answer:

The two main reasons that your results might not match up each time are uncontrolled conditions and experimental error.

The primary area of the brain she is using is called the frontal cortex. It works combined with the hippocampus.

The frontal cortex or frontal lobe refers to a region of the cerebral cortex in the brain, which can be divided into the medial and lateral frontal cortex.

The frontal cortex is involved in major executive functions including, among others, cognitive skills, working memory, etc.

The frontal cortex works combined with the hippocampus to solve arithmetic mathematical problems.

Learn more about the frontal cortex here:

https://brainly.com/question/7304463

Answer:

1.It's the world's most famous equation, but what does it really mean? "Energy equals mass times the speed of light squared." On the most basic level, the equation says that energy and mass (matter) are interchangeable; they are different forms of the same thing.

2.The process releases energy because the total mass of the resulting single nucleus is less than the mass of the two original nuclei.

3.In nuclear reactions, mass is never conserved—some mass is exchanged for energy and energy for mass. Nuclear reactions take place in an atom's nucleus. In a spontaneous nuclear reaction, such as radioactive decay, mass is "lost" and appears as energy in the form of particles or gamma rays.

4.In a nuclear reaction, mass decreases and energy increases. The sum of mass and energy is always conserved in a nuclear reaction.

5.The process releases energy because the total mass of the resulting single nucleus is less than the mass of the two original nuclei.

Explanation:

hope it helps

Answer:

b) Asthenosphere

Explanation:

The Earths crust is broken into plates. These plates float on the Asthenosphere. This is observed in the diagram.

They float on asthenosphere

Explanation:

A unit length of the solid will expand in length by a fraction 1.0 × 10^-5 of the original per kelvin rise in temperature

Answer:

Jesus didn't have to die in the cross for us but yet he chose to

Answers:

decrease the distance between the objects.

increase the mass of one of the objects

Explanation: I took the test and this was the right answer

Answer:

Earthworms

Explanation:

I hope this answer helps

Answer: The answer to this question is: They are made from different types of atoms, combined in different ways.

The statement is true for the comparison of the water molecule, H2O, to a carbon dioxide molecule, CO2.

They are made from different types of atoms, combined in different ways.

Therefore the correct answer is option D

A chemical compound is a combination of two or more either similar or dissimilar chemical elements.

For example, H₂O is a chemical compound made up of two oxygen atoms and a single hydrogen atom.

The assertion is accurate when comparing the molecules of water and carbon dioxide, H2O, and CO2, respectively.

They are composed of several atom kinds that have been assembled in various ways.

Option D is the right response as a result.

Learn more about a chemical compound here,

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#SPJ2

Answer:

Heat energy does not cool. Objects cool. Energy is not an object. Now, what happens when an object cools is that it gives off some of its thermal energy by one or more mechanisms: radiation, conduction, or convection. In radiation the energy escaped the object as electromagnetic waves - you see the red hot poker slowly dim as it cools, in conduction the energy is transferred Mechanically by the atoms of the hot object being in physical contact with those of the cool object and in convection the hot material moves to a cooler region where it gives up its heat energy by either radiation or conduction.

Answer:

sound is made up of vibrations or sound waves that we can hear these sound waves are formed by objects

Answer:

Sound wave consists to vibrating particles.These knock into other particles causing them to vibrate,and so the sound can travel away from the source.You can hear sound because the vibration in the air cause your ear drums to vibrate this vibration is converted into signals which travel down a nerve to your brain.

Explanation:

hpe its help

Answer:

=0.15m

Explanation:

l

C

​

=l

Al

​

ρ

C

​

ρ

Al

​

​

=200∗

3.5∗10

−5

2.65∗10

−8

Answer:

The Galactic Center (or Galactic Centre) is the rotational center, the barycenter, of the Milky Way galaxy. Its central massive object is a supermassive black hole of about 4 million solar masses, which powers Sagittarius A*, a compact radio source which is almost exactly at the galactic rotational center.

Oil is a compound.

The species which contain more than one element is called compound. Oil is a mixture of many elements like liquid hydrocarbons, oxygen, nitrogen, sulphur, hydrogen gas etc. This elements form a large variety of structure.

Answer:

compound I believe

Explanation:

Many elements are present in the oil, such as liquid hydrocarbons, oxygen, nitrogen, sulfur, hydrogen gas, etc. These elements have many different structures.

Answer:

9.62 minutes 0r 0.16 of an hour

Explanation:

Speed = distance/time

300mph = 48.1 m/t

xt

300t = 48.1

÷300

t = 48.1/300

t = 0.16033333333 hr

0.16033333333 x 60 = 9.62 minutes

60 minutes in an hour

9.62/60= 0.16033333333 hr

So, around 10 minutes.

Hope this helps!

Answer:

500kJ

Explanation:

Common equation;

GPE = mgh

m = mass - in kg

g = gravitational field strength - in N/kg

h = height lifted/lowered - in meters

GPE = 10kg × 10N/kg × 5000m

GPE = 500000Nm

GPE = 500000J

GPE = 500kJ

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