Help me please! i seriously dont understand this unit

Cumulonimbus clouds are associated with stormy weather.

Explanation:

Wave frequency is the number of waves that pass a fixed point in a given amount of time. The SI unit for wave frequency is the hertz (Hz), where 1 hertz equals 1 wave passing a fixed point in 1 second. A higher-frequency wave has more energy than a lower-frequency wave with the same amplitude.

Wave frequency is the number of waves that pass a fixed point in a given amount of time.

Answer:

mr or ms please type ur question fully please

Answer:

think it B Gravitational Field

Explanation:

Hope that worked!!!

Answer: C

Explanation:

I guessed lol . Am i right .

Answer:

The energy of a wave is directly proportional to its frequency, but inversely proportional to its wavelength. In other words, the greater the energy, the larger the frequency and the shorter (smaller) the wavelength.

Explanation:

i hope it will help u buddy✅

Answer:

The energy of a wave is directly proportional to its frequency, but inversely proportional to its wavelength. In other words, the greater the energy, the larger the frequency and the shorter (smaller) the wavelength.

Explanation:

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Answer:

frequency.

Explanation:

Two sound waves of the same frequency that are perfectly aligned have a phase difference of 0 and are said to be “in phase.” Two waves that are in phase add to produce a sound wave with an amplitude equal to the sum of the amplitudes of the two waves.

Answer:

its a!

Explanation:

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Answer:

There are two forces acting in opposition to the driving force, so  the friction and the road and the air resistance. The air resistance is much greater than the friction with the road when a vehicle is in motion. When a vehicle is at rest, all of the forces acting on it are balanced.

Answer:

the paper ball falls faster and the unfolded paper falls at a slower rate

Explanation:

this is because gravity is pulling both objects down to the ground and hence they are falling. Both objects have the same mass and weight but the resultant force of the paper ball is smaller than that of the unfolded paper. The unfolded paper has a larger surface area and so a larger force is acted upon it, meaning there is more air resistance. This shows that the paper ball falls faster than the unfolded paper.

The air resistance acting on the crumpled ball will be less and hence it will fall faster.

Air resistance describes the forces that are in opposition to the relative motion of an object as it passes through the air. The larger the object, the more resistance it has as it falls.

Mathematically, we can write it as -

F = [tex]\frac{1}{2} C_{D}[/tex] × ρv²A

Given are two identical pieces of paper such that one is crumpled up into a ball and the other one is left as flat sheet.

Now, as you throw both, the crumpled up ball and the flat sheet, the crumpled up ball will fall faster. The main reason behind this is that the total surface area of the crumpled ball in contact with the air is less than compared to that of the flat sheet. Air resistance on the crumpled ball with surface are in contact [say A(c)] can be written as -

F[1] =  [tex]\frac{1}{2} C_{D}[/tex] × ρv²A(c)

And that on the flat sheet with area of contact with the air [say A(f)] can be written as -

F[2] =   [tex]\frac{1}{2} C_{D}[/tex] × ρv²A(f)

Now as A(f) > A(c), therefore F[2] > F[1]

Therefore, the air resistance acting on the crumpled ball will be less and hence it will fall faster.

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Answer: 9.Gamma rays    10. Hertz

Explanation:

The temperature of water changes as It decreases first and then remains constant . when it is placed in a freezer and then begins to freeze, therefore the correct answer is option A .

It can be defined as the form of the energy in which heat is transferred from one body to another body due to their molecular movements, thermal energy is also known as heat energy .

When water changes to ice, firstly the temperature of the water decreases due to the specific heat, and during the phase change process, the temperature of the water remains constant .

Water temperature fluctuates when it initially drops and then stays the same . The right response consequently options A when something is placed in a freezer and starts to freeze .

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Answer:methane + oxygen -> carbon dioxide + water.

Explanation: this is your answer was happy to help

Answer:

B. Millimeters

Explanation:

Milliliters is a unit for volume

Millimeters are length, so its suitable for this.

Kilometers is also a unit used for length but its too big for a shoe measurement.

Kilograms is a unit for weight.

Answer:

Headphones use electromagnets, and Audio Speakers use very large magnets inside of them

Explanation:

This answer doesn't really need an explanation but you can just research why they use those kind of magnets in those objects if you want.

Answer:

2

Explanation:

Step 1: RxN

4Al + 3O₂ → Al₂O₃

Step 2: Balance RxN

We have 4 Al's and 6 O₂'s on the reactant side.

We need the same number of Al's and O₂'s on the product side.

4Al + 3O₂ → 2Al₂O₃

Answer:

Explanation:

So force =m*a

   Mass = 86 kg acceleration due to gravity = 10m/s

The mass of the person would be 66 kg on both Earth and the Moon.

Answer:

Wavelength is one way of measuring the size of waves. ... The wavelength of a transverse wave can be measured as the distance between two adjacent crests. The wavelength of a longitudinal wave can be measured as the distance between two adjacent compressions.

Explanation:

Answer:

d

Explanation:

because the motion is changing as it slows down mark brainliest to help me out :)

The example of an unbalanced force is a stroller being pushed. The correct option is D.

An object is said to be acted upon by an unbalanced force only when an individual force is not balanced by a force of equal magnitude and direction.

Unbalanced forces are caused by a forward force or thrust and a frictional force opposing each other.

Friction is an opposing force to motion. It occurs whenever two surfaces rub against each other, such as when you rub your hands together or apply the brakes on a bike or car.

Forces that are balanced are those that are opposite in direction and equal in size.

Equilibrium is defined as the presence of balanced forces. There is no change in direction when forces are balanced.

As here pushing a stroller is not balancing the force as the force applied is more than the opposing one.

Thus, the correct option is D.

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Answer:

Radio waves have the longest wavelengths in the electromagnetic spectrum.You can tune a radio to a specific wavelength—or frequency—and listen to your favorite music. The radio "receives" these electromagnetic radio waves and converts them to mechanical vibrations in the speaker to create the sound waves you can hear.

Explanation:

Answer:

I cant read anything post a better pic broo

Answer:

Its the third answer!!!

Explanation:

Answer:

measure the time it takes for the dog to run a certain distance

Explanation:

Speed can be thought of as the rate at which an object covers distance. A fast-moving object has a high speed and covers a relatively large distance in a short amount of time.

Answer:

none

Explanation:

Answer:

2

Explanation:

i think that it would be 2 because it makes the most sense