an electron has a total energy of 5.5×105ev . what is its speed?

Answers

Answer 1

The speed of the electron is 1.98×10⁸ m/s. Considering the electron has a total energy of 5.5×105ev.

The speed of an electron with a total energy of 5.5×10⁵ eV can be calculated using the relativistic energy-momentum equation: E² = (pc)² + (mc²)²

where E is the total energy of the electron, p is its momentum, m is its rest mass, and c is the speed of light.

Rearranging the equation to solve for the momentum, we get: p = sqrt(E² - (mc²)²)/c

Substituting the values, we get:

p = sqrt((5.5×10⁵ eV)² - (9.11×10⁻³¹ kg * (2.998×10⁸ m/s)²)²)/2.998×10⁸ m/s

p = 1.80×10⁻²⁰ kg·m/s

Finally, we can calculate the speed of the electron using the momentum:

v = p/m = (1.80×10⁻²⁰ kg·m/s) / 9.11×10⁻³¹ kg

v = 1.98×10⁸ m/s.

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Related Questions

which two elements define a story's setting?
geographical location
character description
weather conditions
plot structure
dialogue and action
Reset
Next

Answers

Answer:

Geographical location, and time and weather conditions

Answer:

Georgraphical location and weather conditions

Explanation:

Setting is where the story takes place so the location would be vital and same with weather conditions because it determines what the character(s) do

An object launched at 65 degrees from the horizontal would have the same range (distance travelled) as an object launched from? Write only the WHOLE number with no units (example: 65)

Answers

An object launched at 65° from the horizontal would have the same range (distance travelled) as an object launched at 25° from the horizontal.

The greatest range you can get when you launch a projectile is to aim it at 45° above the horizon.  If you change that angle by something, then the range is shorter by the same amount if you increse OR decrease the angle by the same something.

65° = 45° plus 20°.  So the range will be the same if you launch at an angle of (45° minus 20°).  That's 25°.

The density of a 2-cubic meter block of mass of 1000 kg is a. 200 kg/m3. b. 1000 kg/m3. c. none of the above d. 500 kg/m
e. 100 kg/m3

Answers

The density of a 2-cubic meter block of mass of 1000 kg is 500 kg/\(m^{3}\).

We use the word "density" to indicate how much space (or "volume") an object or substance occupies in relation to the amount of matter contained therein (its mass). Density can also be defined as the quantity of mass per unit of volume. A dense object is one that is both hefty and small. Density is a crucial concept because it allows us to predict which compounds will float and sink in liquids. The density of an object needs to be lower than the density of the liquid in order for it to float.

Density= \(\frac{Mass}{Volume}\)

= \(\frac{1000 kg}{2 cubic meter}\)

= 500 kg/\(m^{3}\)

So, The density of a 2-cubic meter block of mass  1000 kg is 500 kg/\(m^{3}\).

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how will the gravitational force between the moon and a spacecraft change as the spacecraft nears the moon? it will increase. it will increase. it will repel the spacecraft. it will repel the spacecraft. it will decrease. it will decrease. it will remain the same.

Answers

As the spacecraft nears the moon, its gravity will increase.

This is because the gravitational force between objects is inversely proportional to their distances from each other.

The gravitational force between a spacecraft and moon will also increase as they get closer together due to tidal forces. Tidal forces are caused by differences in water levels at either side of an object and are strongest when two objects are close together (i.e., when they're orbiting).

Therefore, When a spacecraft is close to the moon, the gravitational force between it and the moon will increase.

What does the term "tidal force" mean?Tidal forces are the outward pushing and pulling of water caused by the gravitational pull exerted on seawater by a larger body. They play an important role in coastal dynamics, including wave formation, erosion, and sedimentation.

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What type of electric current does a power plant generate for use in your home?

A.
direct
B.
alternating
C.
repeating
D.
straight

Answers

B: Alternating, outlets have alternating currents that are supplied by power plants.
Hopefully this helps!

A bike moves along the x- axis from an initial position x, = -300m to a final position x, = 900m during a time interval t = 2 minutes. The average speed of this bike is:

Answers

Given:

The initial position of the bike, x_i=-300 m

The final position of the bike, x_f=900 m

The time it takes for the bike to move to the final position, t=2 min=120 s

To find:

The speed of the bike.

Explanation:

The speed of an object is the time rate of change of distance.

That is the speed of an object is given by the ratio of the distance to the time.

Thus the speed of the bike is given by,

\(s=\frac{x_f-x_i}{t}\)

On substituting the known values,

\(\begin{gathered} s=\frac{900-\left(-300\right)}{120} \\ =10\text{ m/s} \end{gathered}\)

Final answer:

The average speed of the bike is 10 m/s

With friction turned on, let the skater do one back-and-forth on the half pipe. Use
the grid. Does he reach the same height as when he started?

Answers

The skater does indeed reach the same height on either side of the track With friction turned on.

The only thing that will change is how long it takes for the skater to come to a rest during the scenario. Only the skater's initial height when placed onto the track affects the overall energy, which remains constant.Potential energy is transformed into kinetic energy as the skateboarder descends the ramp. Some of the system's energy is changed into heat energy by friction. The energy cannot be returned to the system's potential or kinetic energy once the kinetic energy has been transformed into heat.

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The pressure due to the liquid on an object immersed in that liquid is 4500 Pa
The density of the liquid is 900 kg/m.
What is the depth of the object below the surface of the liquid ?

Answers

Answer:

The depth of the object below the surface of the liquid is 0.510 meters.

Explanation:

The hydrostatic pressure (\(P\)), measured in pascals, experimented by the object is directly proportional to density of the fluid (\(\rho\)), measured in kilograms per cubic meter, gravitational acceleration (\(g\)), measured in meters per square second, and depth of the object (\(h\)), measured in meters. That is:

\(P = \rho\cdot g \cdot h\) (1)

If we know that \(P = 4500\,Pa\), \(\rho = 900\,\frac{kg}{m^{3}}\) and \(g = 9.807\,\frac{m}{s^{2}}\), then the depth of the object is:

\(h = \frac{P}{\rho\cdot g}\)

\(h = \frac{4500\,Pa}{\left(900\,\frac{kg}{m^{3}} \right)\cdot \left(9.807\,\frac{m}{s^{2}} \right)}\)

\(h = 0.510\,m\)

The depth of the object below the surface of the liquid is 0.510 meters.

The depth of the object below the liquid's surface will be

"0.510 m".

Pressure and Density

According to the question,

Object immersed, P = 4500 Pa

Density of liquid, ρ = 900 kg/m³

Acceleration due to gravity, g = 9.8 m/s²

We know the relation,

Hydrostatic pressure (P) = ρ.g.h

or,

Depth will be:

→ h = \(\frac{P}{\rho .g}\)

By substituting the values,

     = \(\frac{4500}{900\times 9.8}\)

     = \(\frac{4500}{8820}\)

     = 0.510 m

Thus the above answer is appropriate.  

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Mechanical energy is similar to thermal energy because they both?

Answers

Answer:

Mechanical energy is the ordered movement of the molecules as a single unit. Thermal energy is the random movement of the molecules. Mechanical energy can be 100% converted to thermal energy, but thermal energy cannot be fully converted to mechanical energy.

According to ohms law, as the voltage increases across a 40 ohm resistor what happens to the current, resistors, and resistance

Answers

Answer:

As the voltage increases, the current flowing through the circuit increases while the resistance of the resistor remains constant.

Explanation:

Ohm's law states that the current flowing through a circuit is directly proportional to the applied voltage.

V = IR

where;

I is the current

R is the resistance

V is the applied voltage

Based on this law (Ohm's law), as the voltage increases, the current flowing through the circuit increases while the resistance of the resistor remains constant.

What happens when a high pressure air mass follows a cold front? 1. Warm and dry 2. Warm and humid 3. Cool and dry 4. Cool and humid

Answers

Lifted warm air ahead of the front produces cumulus or cumulonimbus clouds and thunderstorms.

When a cold front approaches, the heavier (denser) cool air pushes beneath the lighter (less dense) warm air, causing it to climb into the troposphere. Cumulus or cumulonimbus clouds and thunderstorms are produced by lifted warm air ahead of the front.

When a cold, dense air mass pushes beneath a warm, lighter air mass, causing the warm air to rise, a cold front forms. The cold air moves forward, displacing the warm air at the surface. As moisture in the warm air mass rises, cools, and condenses, rain and thunderstorms can form.

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when we throw an arrow by streching the string of a bow , how does the energy change take place ?​

Answers

when we throw an arrow , we first stretch the string of the bow. while stretching the string of the bow, the work done by us in stretching the bowstring gets stored as potential energy in the bow. This potential energy of the bow is transformed into kinetic energy when the bowstring is released and this gives the momentum and Kinetic energy to the arrow.

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When an arrow is drawn back by a bow, the work done by us in stretching the bowstring gets stored at potential energy in the bow. This potential energy of bow is transformed into kinetic energy when the bowstring is released and this gives kinetic energy to the arrow.

All the best!

Which terms best describe what happened to the light in the image below?

Select all that apply.

Which terms best describe what happened to the light in the image below?Select all that apply.

Answers

Rainbow images are captivating circular bands of colors formed when sunlight is refracted by water droplets, creating a beautiful display of nature's intricate light phenomena.

A rainbow image is a captivating natural phenomenon that occurs when sunlight is refracted, or bent, by water droplets in the atmosphere. It appears as a circular band of colors, typically red, orange, yellow, green, blue, indigo, and violet, arranged in a specific order.

The process begins when sunlight enters a raindrop and is split into its component colors due to the bending of light. As the light rays bounce off the inner surface of the droplet, they are further refracted and dispersed. When the dispersed light exits the droplet, it forms a circular arc in the sky, with the red color on the outer edge and the violet on the inner edge.

The vibrant colors of a rainbow image are a result of the varying wavelengths of light being separated and visible to our eyes. Rainbows can be observed after rain showers when sunlight breaks through the clouds, or they can be seen near waterfalls or misty areas. They are a beautiful reminder of the intricate nature of light and the wonders of the natural world.

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2.Calcular el flujo magnético a través de una bobina con 460 espiras de 2 m² de superficie cuyo eje forma un ángulo de 60° con un campo magnético uniforme de 2 .

Answers

El flujo magnético a través de una bobina con 460 vueltas de superficie de 2 m² cuyo eje forma un ángulo de 60 ° con un campo magnético uniforme de 2 es 779.42 Weber

La fórmula para calcular el flujo magnético a través de una bobina se expresa como:

\(\phi = NABsin\theta\) dónde:

N es el número de vueltas A es el área de la sección transversal B es el campo magnético es el ángulo formado con el campo uniforme

Dados los siguientes parámetros

N = 450 turns

A = 2 m²

B = 2

\(\theta\) = 60degrees

Sustituya los parámetros dados en la fórmula como se muestra:

\(\phi=450 \times 2\times 2sin60^0\\\phi = 900sin60^0\\\phi = 900(0.8660)\\\phi=779.42Weber\)

El flujo magnético a través de una bobina con 460 vueltas de superficie de 2 m² cuyo eje forma un ángulo de 60 ° con un campo magnético uniforme de 2 es 779.42 Weber

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what changes must a gas undergo to become a liquid?

Answers

The conversion of gas into liquid happens due to condensation.

Condensation is the process through which the physical state of matter changes from the gaseous phase into the liquid phase. For example, condensation occurs when water vapour (gaseous form) in the air changes into liquid water when it comes in contact with a cooler surface. When the water in the air comes in contact with a cold surface, it condenses to form water droplets. The opposite of condensation is evaporation reaction.When temperature is increased and pressure is decreased, the gaseous state is converted into liquid state on this impact. This also can be reversed by decreasing the temperature and increasing the pressure.

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a homer in in a baseball game was measured at 450 feet. how many meters is this equal to?

Answers

137.16



hopes it helps







If observations had shown that the cosmic microwave background was perfectly smooth (rather than having very slight variations in temperature), then we would have no way to account for _________.

Answers

If observations had shown that the cosmic microwave background (CMB) was perfectly smooth, without any variations in temperature, then we would have no way to account for the formation of **large-scale structures** in the universe.

The slight temperature variations observed in the CMB, known as anisotropies, provide crucial evidence for the formation of structures such as galaxies, galaxy clusters, and cosmic filaments. These temperature fluctuations are a result of tiny density fluctuations in the early universe, imprinted shortly after the Big Bang during a period known as cosmic inflation.

These density fluctuations served as the seeds for the gravitational collapse of matter, leading to the formation of structures over billions of years. The regions of slightly higher density would have experienced stronger gravitational attraction, causing matter to accumulate and form clumps, while regions of slightly lower density would have become underdense regions.

If the CMB had been perfectly smooth with no variations, it would suggest a very uniform and homogeneous early universe, lacking the necessary initial conditions for the formation of structures. Our understanding of the evolution of the universe and the formation of galaxies and other large-scale structures would be significantly challenged without the observed temperature fluctuations in the CMB.

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A student uses a spring scale attached to a textbook to compare the static and kinetic friction between the textbook and the top of a lab table. If the scale measures 1,580 g while the student is pulling the sliding book along the table, which reading on the scale could have been possible at the moment the student overcame the static friction?

Answers

Answer:1860g

Explanation:The force would have to be greater than 1580g, which is when the student is pulling the sliding book with the spring scale

a 30 kg cart is travelling in a zero friction environment at a constant velocity of 5m/s. It's about to go up a very steep hill. How high will the cart be when the velocity changes to zero? PLEASE HELP

Answers

Answer:

1.27551m

Explanation:

This is a simple energy convertion problem. Since there is no friction, and assuming no air drag and other external factors, mechanical energy should be conserved in this system.

Thus, we get:

\(KE_{initial} + PE_{initial} = KE_{final} + PE_{final}\)

We also know that the gravitational potential energy is equal to mgh, while the KE can be calculated using \(\frac{1}{2}mv^2\)

One thing to note here, is that the final KE will be 0, as there is no velocity at the end. Furthermore, we also can set the initial PE as 0 as we are looking at relative height, and at the start it is at h=0.

\(KE_{initial} = PE_{final}\)

Plugging in:

\(\frac{1}{2}*30*5^2 = 30*9.8*h\)

Solving for h, we get 1.27551m

A person is sitting in a car watching a traffic light. the light is 14.5 m away.
when the light changes color, how long does it take the new color of light to
travel to the driver so that he can see it? state your answer in nanoseconds.
v=3.00*10^8 m/s

Answers

The light needs 48.3 x 10-9 seconds, or 48.3 nanoseconds, to get to the driver.

The distance traveled in a unit of time is called speed. It refers to a thing's rate of movement. The scalar quantity known as speed is the velocity vector's magnitude.The following formula determines the speed of a light wave:

Speed = Distance/Time

Both the distance to be traveled and the light wave's velocity are specified. 

The distance traveled by the wave in the given amount of time may be determined by multiplying the 

Putting distance = 14.5 m and speed = 3 x 10^8 m/s

3 x 10^8 m/s = 14.5 m/Time

Time is defined as 48.3 x 10-9 seconds, or 48.3 nanoseconds.

As a result, the light needs 48.3 x 10-9 seconds, or 48.3 nanoseconds, to reach the driver.

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\(r=s^2/t^2\) 1. If s is tripled and t stays constant, r is multiplied by... 2. If t is doubled, and s stays constant, r is multiplies by...

Answers

Answer:

9 and 4

Explanation:

The relation is:

● r = s^2 / t^2

Triplind s means multiplying it by 3. Since it's an equation we should multiply both sides by the same number

Let k be the number we should multiply by r

●k* r = (3s)^2 / t^2

●k* r = 9s^2 /t^2

We have multiplied s^2 by 9 so we should do the same for r.

k = 9

■■■■■■■■■■■■■■■■■■■■■■■■■■

Doubling t means multiplying it by 2.

Let x be the number we shoukd multiply by r.

● x* r = s^2/(2t)^2

● x*r = s^2/ 4t^2

We have multiplied t^2 by 4 so we should do the same for r.

x= 4

What is the speed of a car which travels 45 miles in 3 hours?

Answers

Answer:

15 mph

Explanation:

45/3=15

Answer:

45

Explanation:

do the math

Part A
1) What happens when you add a second drip and space both the drips close together? Describe the pattern they form and explain the cause for this pattern in detail.

2)Turn off the second drip and then add a barrier with one slit. What do you observe on the right side of the wall? What do you observe on the left side of the wall? From a physics perspective, explain your observations of what is happening on both sides of the barrier.
Part B
1) On the Sound tab, investigate briefly all the phenomena you explored with water waves above and describe any similarities in your results for sound. Specifically, describe
- wave pattern as seen on the screen
- shape and amplitude of the graph
- effect of frequency on wavelength
- effect of frequency on velocity
- pattern with two sources
- wave pattern with a single-slit barrier

2) Sound and water waves obviously have many similarities, but they are not exactly the same. Describe all the differences you can think of between sound waves and water waves.
Part C
1) On the Light tab, once again investigate briefly all the phenomena you explored with water and sound above. Describe any similarities in your results for light. Specifically describe
- wave pattern as seen on the screen
- shape and amplitude of the graph
- effect of frequency on wavelength
- effect of frequency on velocity
- pattern with two sources
- wave pattern with a single-slit barrier

2) Light waves have some similarities with water and sound waves, but they are not exactly the same. Describe all the differences you can think of between light waves, sound waves, or water waves

Plz Answer All Questions. tysm.

Answers

Answer:

1) Superposition results in adding the two waves together. Constructive interference is when two waves superimpose and the resulting wave has a higher amplitude than the previous waves. Destructive interference is when two waves superimpose and cancel each other out, leading to a lower amplitude.

I'm sorry thats all I can help with

Answer:

Turn off the second drip and then add a barrier with one slit. What do you observe on the right side of the wall? What do you observe on the left side of the wall? From a physics perspective, explain your observations of what is happening on both sides of the barrier.

Explanation:

 The speed and amplitude of the waves are affected when hitting the barrier. The two waves reflect off the barrier and they travel in opposite directions.

Why are p waves unable to reach the shadow zone

Answers

Explanation:

The Shadow zone is the area of the earth

from angular distances of 104 to 140 degrees from a given earthquake that does not receive any direct P waves

Recoil is noticeable if we throw a heavy ball while standing on roller skates. If instead we go through the motions of throwing the ball but hold onto it, our net recoil will be?.

Answers

Answer:

zero

Explanation:

(please awnser i need my grade up) We can calculate the about of potential energy in an object using the formula PE = mgh where m is the mass of the object, g is the acceleration due to gravity (which on Earth is a constant 9.8) and h is the height the object is from ground. If I have a 2kg bar of gold and raise that to a shelf mounted 3 meters from the ground what is that objects GPE? Remember to insert the numbers into the formula like this PE = (2) (9.8) (3) , you may use your calculator to complete this multiplication problem.

Answers

Answer:

88.2 J

Explanation: Hope I helped <3

A boat takes 4 hours for travelling downstream from point A to point B and coming back to point A upstream. If the velocity of the stream is 2 Kmph and the speed of the boat in still water is 4 kmph, whit is the distance between A and B

Answers

Answer:

d = 6 km

Explanation:

In this case we have the relative speed of the boot changes, suppose that the boat and the river have the same direction when the boat goes from A to point B

       vbr = vrt + vbt

        vbr = 2 + 4

        vbr = 6 km / h

        v₁ = 6 km / h

velocity is constant

         v₁ = d / t₁

         t₁ = d / v₁

when the boat returns to the starting point the speed is both opposite

        vbr = vbt - vrt

        vbr = 4-2

        vbr = 2 km / h

        v₂ = 2 km / h

as the speed is constant

         t₂ = d / v₂

they also indicate that the total time is 4 h

       t₁ + t₂ = 4

we substitute

       4 = d / v₁ + d / v₂

       4 = d (1 / v₁ + 1 / v₂)

       d = 4 / (1 / v₁ + 1 / v₂)

let's calculate

       d = 4 / (1/6 + 1/2)

       d = 4 / 0.6666 67

       d = 6 km

According to the tachometer in the car the engine is rotating at 3500 RPM. Through what angle will this engine rotate each minute?

Answers

Answer:

Please look at the Explanation.

Explanation:

Assuming that the engine runs at a constant speed of 3500 revolutions per minute (RPM), we can calculate the angle through which it rotates each minute using the following steps:

Convert RPM to RPS (revolutions per second) by dividing by 60, since there are 60 seconds in a minute:

3500 RPM ÷ 60 = 58.33 RPS

Multiply RPS by 2π (the number of radians in a complete circle) to find the angle in radians per second:

58.33 RPS × 2π = 366.93 radians/second

Finally, multiply by 60 to convert radians per second to radians per minute:

366.93 radians/second × 60 seconds/minute = 22,015.8 radians/minute

Therefore, the engine rotates through an angle of approximately 22,015.8 radians each minute when it is running at 3500 RPM.

is the distance traveled during a specific unit of

Answers

Answer:

velocity

Explanation:

I think i dont really know

A key benefit of ________ is that they minimize variation and promote quality through consistent implementation of a process or procedure within the organization, even if there are temporary or permanent personnel changes.

Answers

A key benefit of standardized operating procedures (SOPs) is that they minimize variation and promote quality through consistent implementation of a process or procedure within the organization, even if there are temporary or permanent personnel changes.

SOPs are essential in establishing a shared understanding of how tasks should be executed, ensuring that all team members follow the same guidelines and adhere to the organization's expectations. By providing a clear, step-by-step guide, SOPs help reduce errors, improve efficiency, and maintain consistency across various departments, this uniformity allows for easier monitoring, evaluation, and optimization of business processes, ultimately leading to higher quality output and increased customer satisfaction.

Furthermore, standardized operating procedures facilitate effective communication and collaboration between employees, as everyone is working from the same playbook. They also simplify training, onboarding, and transition periods, as new hires and temporary workers can quickly get up to speed by following the established procedures. In summary, SOPs are crucial for organizations to maintain consistent quality, minimize variation, and streamline their operations, particularly in the face of personnel changes.

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