A 0.155 kg arrow is shot from
ground level, upward at 31.4 m/s.
What is its potential energy (PE)
when it is 30.0 m above the
ground?

Answer:

electromagnetic waves can travel through a vacuum where as mechanical waves have to have a medium to travel

Explanation:

Answer:

Evaluate the solution.

Explanation:

A technological design is designed as the design and study of a solution that can be provided from the solution by identifying the root cause or problem and trying to solve by various means.

A good technological design requires the minimum effort and resources while meeting the requirement of the problem.

The steps involved in the technological design are :

1. search and identify the problem or need.

2. design a solution

3. Implement a solution.

4. Evaluate the solution.

Therefore, the final step or the fourth step in the process of a technological design is " evaluating or communicating the final design solution".

Alicia's feelings of unfairness in the situation where she must work in her job for two years before being considered for promotion fall under the category of distributive justice.

Distributive justice refers to perceptions of fairness in the distribution or allocation of rewards, benefits, and resources within an organization. It focuses on the fairness of the outcomes or end results. Alicia's dissatisfaction stems from her perception that the distribution of promotions is unfair because she believes that the requirement of a two-year tenure is not justified or equitable.

In Alicia's view, the two-year tenure requirement might be seen as arbitrary or unrelated to her actual performance, skills, or qualifications for the promotion. She may argue that her abilities and contributions should be the primary factors considered for advancement, rather than simply the length of time spent in her current position.

Distributive justice is concerned with ensuring fairness and equity in the allocation of rewards, such as promotions, raises, and other benefits, based on individuals' contributions, qualifications, or merit. Alicia's sense of unfairness suggests that she perceives a disconnect between her actual performance and the reward structure in place.

Alicia's feelings of unfairness regarding the two-year tenure requirement for promotion fall under the category of distributive justice. She believes that the distribution of promotions is unfair because she perceives the requirement as unrelated to her actual qualifications and performance. Addressing her concerns would involve reviewing and potentially revising the promotion criteria to ensure a more equitable and merit-based allocation of rewards. By considering individuals' contributions and qualifications, organizations can enhance perceptions of distributive justice and promote a fair and motivating work environment.

To know more about tenure visit:

https://brainly.com/question/31553571

#SPJ11

You would be left with 1.25 g.

After 0.001 second, 10 grams decays to 5 grams.

After another 0.001 second, 5 g decays to 2.5 g. (Total time 0.002 s; two half-lives have passed)

After another 0.001 second, 2.5 g decays to 1.25 g. (Total time 0.003 s; 3 half-lives have passed)

The magnitude of the motional emf in the rod is 0.1872 when an isolated conducting rod of length 8.00 cm is oriented parallel to the x-axis. The speed of rod in y-direction is 3.90m/s.

Given an isolated conducting rod of length (l) = 8.00 cm = 8x10-2m

it moves in the y-direction at (v) = 3.90 m/s

uniform magnetic field of magnitude (B)= 0.600T

Let the magnitude of the motional emf in the rod be E

We know that E = BxlxV

E = 0.600T x 3.90m/s x 8x10-2m = 18.72x10-2

Hence the magnitude of the motional emf in the rod is 0.1872

To learn more about emf click here https://brainly.com/question/15121836

#SPJ4

Explanation:

improved saftey for children

Answer:

D. Improved safety for children

Explanation:

change in position of an object we use the

symbol ∆×\ delta×∆×for displacement, where ∆. means

"change" ∆ vector quantity with units of distances start

text ,d,I,s,t,a,n,c,e , end text.

Centripetal acceleration ac is the acceleration experienced while in uniform circular motion. It always points toward the center of rotation. It is perpendicular to the linear velocity (tangential speed) v and has the magnitude:

\(a_c = \dfrac{v^2}{R}\)

Solving for v:

\(v = \sqrt{a_c R} = \sqrt{(250\;m/s^2)(0.50\;m)} = 5\sqrt{5}\;m/s \approx 11.18\;m/s\)

The yo-yo’s tangential speed 11.18 m/sec.

The speed of an object is the magnitude of the change of its position over time or the magnitude of the change of its position per unit of time; it is thus a scalar quantity.

Centripetal acceleration ac is the acceleration experienced while in uniform circular motion. It always points toward the center of rotation. It is perpendicular to the linear velocity (tangential speed) v and has the magnitude:

\(a_{c} = v^2/r\)

Solving for v

\(v = \sqrt{a_{c}r }\) = 11.18 m/sec

The yo-yo’s tangential speed 11.18 m/sec.

To learn more about speed refer to the link:

brainly.com/question/28224010

 #SPJ2

Friction affects the work done by machines by reducing the mechanical advantage of that machine.

MA = \(F_{o}\) / \(F_{i}\)

MA = Mechanical advantage

\(F_{o}\) = Output force

\(F_{i}\) = Input force

Mechanical advantage is the ratio of output force to input force in a system.

According to law of conservation of energy, input energy is equal to output energy. It is true in the machines also but some of the output energy is not necessarily asked of the machine. That energy which is not useful is heat produced due to friction.

Therefore, friction affects the work done by machines by reducing the mechanical advantage of that machine.

To know more about mechanical advantage

https://brainly.com/question/6968974

#SPJ1

Answer:

There are two main ways to determine the age of a rock, these are Relative dating and Absolute dating. Relative dating is used to determine the relative order of past events by comparing the age of one object to another.

Explanation:

Explanation:

rock and fossils are made by layers of dirt, sand,organic matter that has beem compressed over thousands,if not millions of years.

some scientists use this layering to determine how old the earth is.

its kind of like looking at the rings of a tree to see how old it is.

the scientists look at each layer of the rock or fossil and use what they already know about when this type of soil or organic matter existed and try to piece together the past

Answer:

The answer is Both types of government work well in countries with large populations.

Explanation:

Answer:

its d

Explanation:

The relationship among air pressure, temperature and density is expressed by the Ideal Gas Law,

This law also known as the General Gas Equation, and this law describes the behavior of gases in terms of their pressure, volume, temperature, and number of particles. According to the law, the pressure of a gas is directly proportional to its temperature and the number of particles present in it, and inversely proportional to its volume and density. In simpler terms, when the temperature of a gas increases, the pressure it exerts also increases, assuming that the number of particles and volume remain constant.

Similarly, if the volume of a gas decreases while the number of particles and temperature remain constant, its pressure will increase. Lastly, if the density of a gas increases while its volume and temperature remain constant, its pressure will also increase. Overall, the Ideal Gas Law helps scientists better understand how air pressure, temperature, and density are interrelated, making it an essential tool in atmospheric science and meteorology.

To learn more about Ideal Gas Law here:

https://brainly.com/question/30458409

#SPJ11

Answer:

Yes.

Explanation:

There is potential energy in your leg that once comes in contact with the ball turns into kinetic energy.

Refer to the attached image.

Explanation:

Motor evoked potentials (MEPs) are the electrical signals recorded from the descending motor pathways or from muscles following stimulation of motor pathways within the brain.

Espero eso ayude. Marque como más inteligente.

Answer:

four covalent bonds is the answer

In general, the most prevalent ways of electrical wire bonding are:

Soldering, Wire nuts, Crimping, Terminal blocks, Heat shrink tubing.

Soldering is the process of melting a metal alloy, such as tin or lead, onto wires to form a permanent, low-resistance link. Soldering is frequently used to join fragile or thin wires.

Wire nuts are twist-on connectors that are often used for connecting wires. They are available in a variety of sizes to accommodate various wire gauges and may be quickly removed if necessary.

Crimping is the process of pressing a metal connection onto a wire using a specific tool to produce a strong bond. This technique is frequently utilised in automotive and maritime applications.

Terminal blocks are used to join together many wires. They are made up of a metal strip and screws that keep the wires in place.

Heat shrink tubing is a form of plastic tubing that contracts when heated. It is useful for insulating and protecting splices and connectors.

For more such questions on electrical wire, click on:

https://brainly.com/question/14311319

#SPJ4

While driving in the city, the busy urban environment can induce visual overload.

Visual overload occurs when you experience a sensory overload of visual information. A busy urban environment is one of the most common situations where visual overload occurs. It is where you are bombarded by a lot of visual stimuli and it becomes difficult to focus on a single thing.

It can occur because there are too many things to look at or because the things you need to focus on are not well defined. It can also occur because of distractions, such as flashing lights or moving objects that catch your attention.

Here are some tips for minimizing visual overload while driving:

1. Avoid distractions such as texting, eating or drinking, or talking on the phone.

2. Limit the number of passengers in your car.

3. Keep the car radio volume low.

4. Don't drive when you're tired.

5. Give yourself plenty of time to reach your destination.

6. Wear polarized sunglasses to reduce glare from the sun.

7. Clean your windshield and mirrors regularly to reduce the amount of glare and dust on the glass.

8. Reduce the speed of your vehicle when driving in heavy traffic to allow yourself more time to react to visual stimuli.

9. Use a GPS navigation system to reduce the need for reading signs.

To know more about Visual overload visit:

https://brainly.com/question/28689155

#SPJ11

Answer:

Probably late but the change in motion of the man is in his speed, I know because every 0.2 seconds, he was gaining more distance as he was the previous 0.2 seconds. His acceleration positive because he was speeding up.

Explanation:

Hope it Helps!

( I realized he started off speeding up but then started slowning down so I am confused if you get this wrong Im so sorry.)

Acceleration is defined as the rate of change of the velocity of the body. The acceleration of the man is positive due to its increased velocity.

Acceleration is defined as the rate of change of the velocity of the body. Its unit is m/sec².It is a vector quantity. It requires both magnitudes as well as direction to define.

The acceleration of the man is positive because acceleration is the rate of change of velocity and the velocity of the person is increasing at an equal interval of time showing that the acceleration is increasing and positive in nature.

Hence due to successive velocity, the acceleration of the man is positive.

To learn more about acceleration refer to the link;

https://brainly.com/question/969842

Answer:

We observe a volcano erupting lava. We can feel the ground tremble during the eruptions. We conclude that deep under the surface of the earth there are forces that produce considerable movement resulting heat and pressure we see.

Explanation:

Got it right on the quiz

The lowest kinetic energy so they vibrate very little option (A) Low kinetic energy is correct.

The initial energy controls the energy that an object possesses in response to the motion. The effort needed to move a material body from rest to the specified velocity is how it is defined.

The object's energy resulting from its location (potential energy) and its motion are both included in the mechanical energy (kinetic energy).

Thus, the lowest kinetic energy so they vibrate very little option (A) Low kinetic energy is correct.

How would you describe the kinetic energy of the particles in a solid?

Learn more about kinetic energy here:

brainly.com/question/12669551

#SPJ4

Answer:

c

Explanation:

A shift inward of the production possibilities curve signifies that: C. The available production resources have decreased, so potential production levels will decrease.

A production possibilities curve (PPC) is also referred to as production possibilities frontier (PPF) and it can be defined as a curve that illustrates the maximum (best) combinations of two (2) products which can be produce in an economy if they both depend on these two (2) main factors;

Basically, the production possibilities curve (PPC) illustrates the maximum combinations of goods that are available with fixed technology and resources.

Furthermore, an inward shift of the production possibilities curve (PPC) signifies that the available resources used for production have decreased, so potential production levels would also decrease.

Read more: https://brainly.com/question/17053992

Answer:

Explanation:

According to equation of motion;

\sum F = ma

m is the mass of the body

a is the acceleration

\sum F = Fm - Ff (along the horizontal)

Fm is the moving force

Ff is the frictional force

Given;

Fm = 12N

Ff = nR = nmg

Ff = n(4)(9.8)

Ff = 39.2n

Substitute the given value into the expression above;

Fm - Ff = ma

12 - 39.2n = 4(2)

-39.2n = 8-12

-39.2n = -4

n = 4/39.2

n = 0.1

Hence the coefficient of kinetic friction between the table and jug is 0.1

Explanation:

x=(80²-0²)/2×4

x=6400/8

x=800m

Answer:

Explanation:

False.

There are also fields -- gravitational, electromagnetic...

The equation for energy in the context of fluid dynamics, specifically in Computational Fluid Dynamics (CFD), is typically represented by the conservation of energy equation, also known as the energy equation or the first law of thermodynamics. The equation can be expressed as:

ρ * (du/dt + u * ∇u) = -∇p + ∇⋅(μ * (∇u + (∇u)^T)) + ρ * g + Q

where:

ρ is the density of the fluid

u is the velocity vector

t is time

∇u represents the gradient of velocity

p is the pressure

μ is the dynamic viscosity

g is the gravitational acceleration vector

Q represents any external heat source/sink

The physical meaning of energy in CFD is the total energy of the fluid system, which includes kinetic energy (associated with the motion of the fluid), potential energy (associated with the elevation of the fluid due to gravity), and internal energy (associated with the fluid's temperature and pressure). The energy equation describes how this total energy is conserved and transformed within the fluid system.

In CFD simulations, the energy equation plays a crucial role in modeling the energy transfer, heat transfer, and flow characteristics within the fluid. It helps in understanding how energy is distributed, dissipated, and exchanged within the fluid domain. By solving the energy equation numerically, CFD simulations can predict temperature profiles, flow patterns, heat transfer rates, and other important parameters that are essential for various engineering applications, such as designing efficient cooling systems, optimizing combustion processes, and analyzing thermal behavior in fluid flows.

To know more about Fluid Dynamics,

https://brainly.com/question/30578986

#SPJ11

Answer:

a.) L = 2.64 kgm^2/s

b.) V = 4.4 m/s

Explanation: Jessica stretches her arms out 0.60 m from the center of her body. This will be considered as radius.

So,

Radius r = 0.6 m

Mass M = 2 kg

Velocity V = 1.1 m/s

Angular momentum L can be expressed as;

L = MVr

Substitute all the parameters into the formula

L = 2 × 1.1 × 0.6 = 1.32kgm^2s^-1

the combined angular momentum of the masses will be 2 × 1.32 = 2.64 kgm^2s-1

b. If she pulls her arms into 0.15 m,

New radius = 0.15 m

Using the same formula again

L = 2( MVr)

2.64 = 2( 2 × V × 0.15 )

1.32 = 0.3 V

V = 1.32/0.3

V = 4.4 m/s

Her new linear speed will be 4.4 m/s

The displacement of the cyclist is obtained as 2.

We have to note that the displacement is a vector quantity and as such the direction of the displacement is taken to be very important as we are discussing the topic. We have to look not just at the magnitudes but also at the direction of the movement.

We have that;  a cyclist who travels 2 miles north, 2 miles east, and finally 2 miles south. The displacement is then; 2 - 2 + 2 = 2

Thus the displacement of the cyclist can be taken as 2.

Learn more about displacement:https://brainly.com/question/30087445

#SPJ1