Please respond!! is it fusion or fission? I am very confused and need to learn this before my test

The car covers a distance d after time t of

d = (2.8 m/s²) t²

Solve for t when d = 69 m:

69 m = (2.8 m/s²) t²

t² = (69 m) / (2.8 m/s²)

t ≈ 4.96 s

Answer: The equation that relates wavelength and frequency for electromagnetic waves is: λν=c where λ is the wavelength, ν is the frequency and c is the speed of light.

10/0.5=20 meter.

Explanation:

The speed of a wave has a wavelength of 0.5 m/s and a frequency of 2 hz is   0.25 m.

Wave is is a disturbance in a medium that carries energy as well as momentum . wave is characterized by amplitude, wavelength and phase. Amplitude is the greatest distance that the particles are vibrating. especially a sound or radio wave, moves up and down. Amplitude is a measure of loudness of a sound wave. More amplitude means more loud is the sound wave.

Wavelength is the distance between two points on the wave which are in same phase. Phase is the position of a wave at a point at time t on a waveform.

There are two types of the wave longitudinal wave and transverse wave.

Longitudinal wave : in which, vibration of the medium (particle) is parallel to propagation of the wave. Sound wave is a longitudinal wave.

Transverse wave : in which, vibration of the medium (particle) is perpendicular to propagation of the wave. Light wave is a Transverse wave.

The relation between velocity, frequency  and wavelength is,

c = λν

Where λ is wavelength, ν is frequency and c is velocity.

Given,

c = 0.5 m/s

ν = 2 hz

λ = ?

Putting all the values in the equation,

0.5 = 2λ

λ = 0.5/2 = 0.25 m

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Answer: 2

Explanation:

From the question, we are informed that the distance of a force arm (FA) is 4 feet and the resistance arm (RA) is 2 feet.

Based on the information given, the mechanical advantage would be calculated as:

= Force Arm / Resistance Arm

= 4 feet / 2 feet

= 2

Answer:

c

Explanation:

The correct option is 2. It is greater at higher temperatures, but only in the case of a moving observer and a stationary source. The Doppler effect is a change in the frequency of a wave caused by the relative motion of the source and observer.

This effect can be noticed in both sound waves and light waves. Sound waves require a medium for transmission and it is not applicable to vacuum. The frequency of the sound wave depends on the medium in which the wave is traveling. As the temperature of the medium increases, the speed of sound also increases. This means that the frequency of sound waves also changes, and hence the Doppler effect changes.

The Doppler effect is greater at higher temperatures but only in the case of a moving observer and a stationary source. The reason is that the temperature of the medium affects the speed of sound, but not the relative motion of the source and observer.

Therefore, option 2, which states that the Doppler effect is greater at higher temperatures, but only in the case of a moving observer and a stationary source.

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Answer:

O Intense rain or an earthquake

Explanation:

Landslides can be initiated in slopes already on the verge of movement by rainfall, snowmelt, changes in water level, stream erosion, changes in ground water, earthquakes, volcanic activity, disturbance by human activities, or any combination of these factors.

Intense rain or an earthquake can trigger a landslide.

In conclusion, intense rain or an earthquake can trigger a landslide.

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Hello..!

Fibroblasts are the representative cells of connective tissue proper.

Fibroblasts are the most common type of cells found in connective tissue.

Some of its functions are:

Answer:

It is a

Explanation:

because it is the most common connective tissue

Yes there are

Explanation:

Both kind of charges exist. (e≈1.60 x 10^-19 C)

Charge is the intrinsic property of a body, that allows it to have either of two kinds of itself.

Positive elementary charge is

\({x}^{1 +} \)

And negative is

\( {x}^{1 -} \)

There are two types of electric charges in nature, they are positive and negative charges.

What is meant by charge ?

Charge is defined as the intrinsic property of matter, by which it experiences a force, when placed in an electromagnetic field.

Here,

In nature, there are two type of electric charges. They are positive charge and negative charge.

The two charges exists in the nature, because, the positive charge attracts the negative charge.

The earth is actually neutral in nature. If a positive charged body is connected to the earth, the positive charge will be drained to the ground. This can be clearly described that, when the surface of earth becomes positively charged, there occurs a potential difference between the surface and the ground.

As a result, the electrons flows from the ground to the surface. The negative charge and positive charges cancels each other and thus neutralizing the surface.

The same happens when a negative charged body is connected to the surface of earth, the charge will be neutralized by the positive charge.

Hence,

There are two types of electric charges in nature, they are positive and negative charges.

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Current is known as the rate of flow of charges that is electrons. While the electrons move through the wire, the number of positive charges is equal to the number of negative charges formed due to motion. Therefore, a wire carrying is normally charged neutral.

An electric current is a circulation of charged particles, consisting of electrons or ions, moving through an electrical conductor or space. it's miles measured because of the net fee of going with the flow of electric price via a floor or right into a controlled quantity. The moving debris is referred to as charge companies, which may be one of the numerous forms of particles, depending on the conductor. In electric-powered circuits, the rate providers are frequently electrons moving through a twine. In semiconductors, they may be electrons or holes. In an electrolyte the rate providers are ions, at the same time in plasma, ionized gasoline, they're ions and electrons.  

The SI unit of electrical modern-day is the ampere or amp, which is the waft of electrical fee across a surface at the charge of one coulomb in keeping with the second.  

The ampere (image: A) is an SI base unit. electric modern-day is measured by the usage of a tool called an ammeter. electric powered currents create magnetic fields, that are used in cars, generators, inductors, and transformers. In everyday conductors, they motivate Joule heating, which creates light in incandescent light bulbs. Time-varying currents emit electromagnetic waves, that are used in telecommunications to broadcast facts.

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The coefficient of static friction between the tires and the road is  0.16.

The coefficient of static friction between the tires and the road for the car to safely navigate the curve at the posted speed is calculated as follows;

Static friction = centripetal force

μmg = mv²/r

μ = ( v² ) / ( rg)

where;

The coefficient of static friction between the tires and the road is calculated as follows;

μ = ( 12² ) / ( 95 x 9.8)

μ  = 0.16

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These two forces are called action and reaction forces and are the subject of Newton's third law of motion.

Have a luvely day!

Answer:

Tuberculosis

Explanation:

Tuberculosis is a disease of lower respiratory system because it's affect the lungs and the voice box . It is a bacteria disease that affect the lungs and it is very contagious. It can spread rapidly to the brain and spine. Most times people with tuberculosis did not show symptoms but when there is symptoms,the symptoms include cough with blood, night sweats, fever e t.c.

Answer:A

Explanation:

Answer:

the anwser you are looking for is B

Explanation:

Answer:

4 m/s in negative acceleration

Explanation:

Acceleration = V- U/t

Where V is the final velocity

U is the initial velocity and t is the time given.

U = 65 m/s

V= 25 m/s

T= 10 seconds

Acceleration= (25m/s - 65m/s)÷10secs

= - 40/10

= -4m/s^2

Hence, it has a negative acceleration.

Answer:

A. negative acceleration of 4 m/s2

Hope this helps!

Explanation:

This indicates that your hair resisted the plastic ruler's motion through it and slowed it down as you ran it through your hair.

Motion in physics is the shift in an object's location in relation to its environment over the course of a certain amount of time. The following statements can be used to describe how a mass-containing item moves: displacement and separation.

1. The act of going; change of location or posture; transference from one condition to another, by any means; natural and proper motion; progress; advancement; thus, the movement of the an army while marching or maneuvering; the movement of either a wheel or a machine; a party of movement

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1) From points O to A and F to G the velocity of the car is increasing.

2) The car moves with constant velocity from points A to B, C to D, and E to F.

3) The average velocity is 12 km/h.

4) The car initially is at rest.

5) The average velocity is 20 km/h.

6) The average velocity between D and E is 10 km/h.

7)The distance traveled from O to B is 48 kilometers.

8) As the car moves from B to C and from D to E, its speed is decreasing.

1) The velocity of the car at point O is 0 km/h and the increases to 24 km/h at point A.

The velocity of the car from point F to G increases from 4 km/h to 20 km/h.

2) The velocity of the car is constant at 24 km/h from A to B.

The velocity of the car is constant at 16 km/h from C to D.

The velocity of the car is constant at 4 km/h from E to F.

3) The velocity of the car at O is 0 km/h and at A is 24 km/h.

So, the average velocity is:

= ( 24 - 0 ) / 2 = 12 km/h

4) Initially the car was at rest.

5) The velocity of the car at B and C is 24 km/h and 16 km/h.

Then the average velocity is:

= ( 24 + 16 ) / 2 = 40 / 2 = 20 km/h

6) The velocity of the car at D and E is 16 km/h and 4 km/h.

The average velocity is:

= ( 16 + 4 ) / 2 = 10 km/h

7) From O to B,

Initial velocity, u = 0 km/h

Final velocity, v = 24 km/h

It takes 4 hours to travel from point O to B.

Using the equation of motion,

v = u + at

24 = a( 4 )

a = 6 km/h²

So, the distance traveled is:

s = ut + ( 1/2 )at²

s = ( 1/2 ) × 6 × ( 4 )²

s = 48 km

8) From B to C and D to E the velocity of the car is decreasing.

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The sound is perceived as louder if the amplitude increases, and softer if the amplitude decreases.  As the amplitude of the sound wave increases, the intensity of the sound increases. Sounds with higher intensities are perceived to be louder.

Wrapping wire into a solenoid shape increase the strength of the magnetic field because the magnetic field of the current aligns the iron's domains.

How can a solenoid amplify the magnetic field it produces?

Increasing the coil's turn count is one way to strengthen the magnetic field surrounding a solenoid. Expanding the current.

Why does coiling a wire make the magnetic field stronger?

Additionally, the magnetic field produced is greater the more turns the wire used to make the coil has. This happens as a result of the magnetic field generated by each turn of the wire superposing onto the same center as the turn before it, strengthening the magnetic field.

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Answer:

The balanced chemical equation is 1SnO2 + 2H2 --> 1Sn + 2H2O.

Explanation:

The equation is now balanced because both sides have an equal number of reactants and products.

There is 1 Sn on each side, 2 O on each side, and 4 H on each side.

The claim can be Cosmetics, hygiene, and cleaning product emissions may be dangerous.

Evidence 1: Effect of Air Quality

Volatile organic compounds (VOCs), including formaldehyde, benzene, and toluene, can be found in a variety of cosmetic, hygiene, and cleaning goods. These VOCs have the potential to evaportate and cause indoor air pollution.

Environmental impact is evidence number two

Cosmetics, hygiene, and cleaning goods can have a detrimental environmental impact during manufacturing, usage, and disposal. Microplastics and certain chemicals are among the substances present in these items that may find their way into rivers and endanger aquatic life.

Evidence 3: Worker health effects

Occupational health risks can be present for workers who manufacture and produce hygiene, cleaning, and cosmetic items.

Reasoning: It is clear from the research that emissions from cosmetic, hygiene, and cleaning goods have the potential to be harmful.

Thus, this way, harmful are the emissions from cosmetics, hygiene, and cleaning products.

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Neither the object's speed nor direction can change

Answer:

D. The object's speed, direction, or both can change.

Explanation:

If Adam applies an unbalanced force to an object, the object's speed, direction, or both can change. This is because an unbalanced force causes an acceleration, which can result in changes in both speed and direction.

Let's consider some examples to better understand this concept. Imagine Adam pushes a book on a table with a greater force in one direction. If the force is greater than the friction between the book and the table, the book will start moving in the direction of the force. This change in direction is caused by the unbalanced force applied by Adam.

Now, let's say Adam applies a constant force to a ball on the ground. If the force is greater than the friction between the ball and the ground, the ball will start rolling and its speed will increase. Again, this change in speed is due to the unbalanced force applied by Adam.

In summary, when an unbalanced force is applied to an object, it can cause changes in the object's speed, direction, or both. So, the correct answer is D: The object's speed, direction, or both can change.

A massive and fast moving bowling ball must have a large momentum while a light and slow moving tennis ball must have a small momentum. However, a fast tennis ball may have the same momentum as a slow rolling bowling ball due to its high velocity. Given two objects of the same size but of different materials, the heavier (denser) object will fall faster because the drag and buoyancy forces will be the same for both, but the gravitational force will be greater for the heavier object.

\( \)

Answer:

0.36 m

Explanation:

The moment of inertial of a wheel can be calculated as

Where r is the radius of the wheel and m is its mass.

Solving the equation for r, we get

So, replacing I by 0.13 kg m2 and m by 0.98 kg, we get

Therefore, the radius of the wheel is 0.36 m

Answer: D

Explanation: I saw it in a bill nye video.

Explanation:

According to newtons first law of motion " A body is at a state of rest or uniform motion unless acted upon by a force (external)" which will either

1. change the direction

2. change the acceleration

3. change the velocity(moves or stop the body from moving)

4. change the shape or size

Answer:

its because the modern model of our solar system is much more updated to the Ptolemy's model

Answer:

15000000 m

Explanation:

From the question,

Speed (S) = Distance(d)/Time(t)

S = d/t....................... Equation 1

Make d the subject of the equation

d = St..................... Equation 2

Given: S = 50 km/s = 50000 m/s, t = 5 minutes = 5*60 seconds = 300 seconds

Substitute these values into equation 2

d = 50000(300)

d = 15000000 m

Hence the skier travels 15000000 m