Explanation:
KEY POINTS
Understanding work is quintessential to understanding systems in terms of their energy, which is necessary for higher level physics.
Work is equivalent to the change in kinetic energy of a system.Distance is not the same as displacement. If a box is moved 3 meters forward and then 4 meters to the left, the total displacement is 5 meters, not 7 meters.Here are a few example problems:
(1.a) Consider a constant force of two newtons (F = 2 N) acting on a box of mass three kilograms (M = 3 kg). Calculate the work done on the box if the box is displaced 5 meters.
(1.b) Since the box is displaced 5 meters and the force is 2 N, we multiply the two quantities together. The object’s mass will dictate how fast it is accelerating under the force, and thus the time it takes to move the object from point a to point b. Regardless of how long it takes, the object will have the same displacement and thus the same work done on it.
(2.a) Consider the same box (M = 3 kg) being pushed by a constant force of four newtons (F = 4 N). It begins at rest and is pushed for five meters (d = 5m). Assuming a frictionless surface, calculate the velocity of the box at 5 meters.
(2.b) We now understand that the work is proportional to the change in kinetic energy, from this we can calculate the final velocity. What do we know so far? We know that the block begins at rest, so the initial kinetic energy must be zero. From this we algebraically isolate and solve for the final velocity
The momentum of the object after moving through a distance of 15m is 45 kg*m/s.
What is force?A physical quantity called force defines the interaction of two systems or objects. Due to the fact that it is a vector quantity, it possesses both magnitude and direction. A typical definition of force is any influence that modifies an object's motion or causes it to accelerate.
To solve this problem, we need to use the equation for the momentum of an object:
p = mv
where p is momentum, m is mass, and v is velocity.
We can start by finding the velocity of the object after it has moved through a distance of 15m. To do this, we need to use the equations of motion:
[tex]v^2 = u^2 + 2as[/tex]
where u is initial velocity (which is zero in this case), a is acceleration, and s is displacement. We can rearrange this equation to solve for v:
[tex]v = \sqrt{2as}[/tex]
F = ma
where F is force, m is mass, and a is acceleration.
The force F can be resolved into horizontal and vertical components:
[tex]F_{horizontal} = F cos(\theta)\\\\F_{vertical} = F sin(\theta)[/tex]
where theta is the angle between the force vector and the horizontal axis. In this case, theta = 60 degrees.
Since the object is on a smooth horizontal plane, there is no force acting in the vertical direction, so we can ignore the vertical component. Therefore, the acceleration of the object is:
[tex]a = \frac{F_{horizontal}} {m} = (15 cos(60)) / 3 = 7.5 m/s^2[/tex]
Now that we know the acceleration, we can find the velocity of the object after it has moved 15m:
[tex]v = \sqrt{2as} = \sqrt{2 * 7.5 * 15} = 15 m/s[/tex]
Finally, we can calculate the momentum of the object using the equation:
p = mv = (3 kg)(15 m/s) = 45 kg*m/s
Therefore, the momentum of the object after moving through a distance of 15m is 45 kg*m/s.
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Where do tectonic activities, such as earthquakes or volcanic eruptions, tend to occur?
A.
near plate boundaries
B.
near all mountains
C.
in the center of continents
D.
only on the ocean floor
2 Señala, ¿Cùal de los siguientes dioses no es griego?
Answer:
dioses griegos
De fuentes de la web
Zeus
Poseidón
Afrodita
Apolo
Hermes
Ares
Artemisa
Hera
Atenea
Demeter
Dionisio
Hefesto
infierno
Hestia
Cronos
Eros
Perséfone
Gaia
Helios
Oceanus
ñandú
Atlas
Asclepio
Hécate
“FAKE SPECIALIST” YAN LIMENG
Overnight, Yan Limeng has caused a sensation throughout the right wing media. The senior adviser of President Trump and conservatives who has authority seem her as a hero. The social media labelled her interview as a fake news just as quickly. Scientists refused her research and said that was sophistry disguised in jargon. In fact, in the process of undergraduate to doctoral education, Yan’s areas of expertise are not virology at all, not even science. In fact, Yan’s title of “Top virologist of World” is sheer fiction. A series of papers published by Yan were copy from conspiracy theory on the Internet. Also, that is despised by the mainstream scientific community.
Answer:
what's the question? I think you need togive me your questions...Impact of informal sector in south African
explicar los conflictos limitrofes que se tuvo con uruguay
Answer:
Con Brasil.
Explicación:
Hay un conflicto fronterizo de Brasil con Uruguay porque ambos reclaman algunas regiones su propiedad que está presente en la frontera. La Isla Brasileña y la Esquina de Artigas son las dos áreas en disputa ubicadas en la frontera entre Brasil y Uruguay. En la actualidad, estas dos áreas están bajo el control y la administración de Brasil, que desde hace décadas son reclamadas por Uruguay, por lo que Brasil es el país que tiene conflictos fronterizos con Uruguay.
The pie chart tracks the percentage of renewable energy that’s being used in a particular community near the ocean. What are two advantages of using this type of graph for this particular data set?
Answer:
A. Readers can compare relative amounts of each type of renewable energy.
C. Readers get a quick visual on how each type of renewable energy contributes to the whole
Explanation:
Looking at the pie chart with each stated percentage consumption of each renewable energy sources, one can get a quick visual representation for easy understanding of how each contributes to the energy consumption that are renewable and also be able to tell how efficient each is.
For example, biomass has a percentage of 48%, which is the highest. Without knowing the actual amount consumed in kilojoules, we can visualize biomass as being the most dominant renewable energy source and that which will have the largest relative amount of renewable energy consumed compared to the rest.
Two advantages of using a pie chart can therefore can be summarized as:
A. Readers can compare relative amounts of each type of renewable energy.
C. Readers get a quick visual on how each type of renewable energy contributes to the whole
what is the most important factor in causing mass movement
Gravity is a natural phenomenon that attracts objects to each other. The important factor, that causes the mass movement, is gravity,
What is gravity?Gravity is also called gravitation. It is a natural phenomenon in which all things with mass and energy are attracted to each other.
This included the stars, planets, galaxy, and surprisingly it also included the light.
As coming towards earth, gravity provides weight to physical objects.
Gravity is the main force that is responsible for mass movement. The component of gravity mainly helps in holding the objects.
Therefore, the correct option is gravity.
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Coastal plain features
Answer:
A coastal plain is a flat, low-lying piece of land next to an ocean. They are far away from mountains.
Once a terrestrial planet had formed from a large number of planetesimals, additional thermal energy from ________ could have melted it and allowed it to differentiate into a dense metallic core and a lower density crust.
Answer:
radioactive decay
Explanation:
Radioactive decay occurs as the nucleus of a set of unstable isotopes is disrupted as a result of great atomic instability. The nuclear breakdown releases a large amount of thermal energy, which has a very high temperature. An example of radioactive decay occurs when terrestrial planets form through a group of planetesimals. The thermal energy released in this process can even melt this planet.
Which elements are included on this map? Check all that apply.
Explanation:
which map
picture plz of that map ...
describe the processes by which sediments are moved by streams and the flow velocities that are necessary to erode them from the stream bed and keep them suspended in the water
Answer:
a) process
saltation, rolling and traction suspension.b) High flow velocities
Explanation:
The process by which sediments are moved by streams are
saltation, rolling and traction suspension.The flow velocities that can erode sediments from the bed and keep them suspended in water have to be extremely high to be able to carry the sediments after agitating them from the River Bed. and this is dependent on the volume and capacity of the water body
If the sun rises north to east, then where does the sun set?
Answer:
The sun would South-west
Two harmful effects of pollution
Answer:
Pollution may muddy landscapes, poison soils and waterways, or kill plants and animals. Humans are also regularly harmed by pollution. Long-term exposure to air pollution, for example, can lead to chronic respiratory disease, lung cancer and other diseases.
Rainfall in the deserts Group of answer choices Lasts for many days when it comes Is incapable of moving much material Is usually very intense Is associated with slow runoff
Answer:
Is usually very intense
Explanation:
Rainfall in deserts is usually very low because some are near the equator where the air is very dry. Some are usually inside continents, by the time the wind gets there, it is dry. And, some are near mountains that block rainfall. But, whenever rain falls in a desert, it is usually very intense and there are usually flash floods after such rainfalls.
So, Rainfall in deserts is usually very intense.
rue or False
When given an equation you should place each side of the equation into DESMOS with an equal sign in front of both.
Group of answer choices
True
False
No answer text provided.
No answer text provided.
Answer:
False
Explanation:
in the scientific calculator your not able to out an equal sign
what removed the carbon dioxide from the primeval atmosphere?
Question 1 of 20
Match the water cycle element in column 1 with the characteristic in column
Hi. You have not presented the elements of the columns that the question refers to. This makes it impossible for this question to be answered. However, when searching for your question on the internet, I was able to find another question exactly like yours, which showed the following elements:
Column 1: A percipitation B transpriation C condensation D evaporation
Column 2: A Raising from plants B Forming droplets C Falling to Earth D Becoming solid
So I hope the answer below can help you:
Answer:
Falling to Earth: Precipitation.
Raising from plants: Transpiration.
Becoming solid: Deposition.
Forming droplets: Condensation.
Explanation:
The water cycle is the continuous movement of water molecules through living beings and physical environments. This movement allows the water molecules to be used by living beings, but they become available again, which ensures that this liquid never runs out. During this cycle, precipitation refers to rain, that is, the fall of water from the sky, which can be in the form of liquid water, snow or hail. The water cycle also has a phase called transpiration, which is the water released by plant leaves, in the form of water vapor.
Another phase of the water cycle is called deposition, which occurs when water vapor in the atmosphere is frozen and becomes solid, forming ice.
There is also a phase called condensation, which occurs when water vapor present in the atmosphere is cooled to the point of becoming liquid water.
Japanese leaders are concerned about the country's aging population and declining birth rate because
A) an aging population means that Japanese society will become less dynamic than in the past.
B) an aging population means that government services for the elderly will be increasingly utilized.
C) a declining population would result in a loss of membership in international economic organizations.
D) a declining birth rate means that fewer workers will be expected to support greater numbers of elderly, placing a financial burden on the workers.
Answer:
D. fewer workers will be expected to support a greater number of elderly placing financial burden on the workers or forcing the government to step in to help support them.
Which of the following phenomena would most likely be studied by a physical geographer?
Answer:
human environment
Explanation:
Answer:
How many polluted rainfalls does Seattle receive per year?
Explanation:
Recall that physical geography studies location (Seattle) of phenomena (e.g., polluted rainfall), processes that changed this (presence of air pollution), and how people are affected (creation of pollution and impacts of polluted storm water).
Which principle of the free enterprise system states that consumers ultimately have
the power to decide if a business will succeed or fail?
A) Profit motive
B) Supply and demand
C) Free competition
D) Consumer sovereignty
Answer:
D) Consumer sovereignty
Explanation:
consumer sovereignty is a principle of the free enterprise system. and they have that power to to finalize
That a business will Suceed or fail.
I hope this helped!
Why is it easier for Canada and the United States to trade
Answer:
we are neighboring countries
Explanation:
they are on our north border
World Music : Week 8: Music of South America and Mexico and answer 2 questions below;1. You should read "Chapter 12: South America and Mexico" first, and then answer the following questions.Your post should be 1-2 paragraphs about 200 words.1) To what extent do each of the musics in this chapter reflect pre-Columbian, European, or African musical traits?2) Can you provide an example of how the survival of indigenous music and culture was challenged by modernization and environmental degradation?
Answer:
Q1. To what extent do each of the musics in this chapter reflect pre-Columbian, European, or African musical traits?
African music is rhythmic and vocalists utilize a vast variety of sounds.
Europian music is based more around traditional and instrumentation, with music threory in the premise of what was being played. Local individuals of Andes in South America, particularly individuals in country regions and rainforest regions, protected melodic practices accepted to originate before the appearance of Columbus. Music found in arban regions uncovers infuences from Eurpe explicitly Spain and Portugal and West Africa.
Q2) Can you provide an example of how the survival of indigenous music and culture was challenged by modernization and environmental degradation?
The modernization and natural environmetal destruction negatively affected native music and culture. African music found in the endurance of it's common and religious background. Music traces all the way back to pre-Columbian time stayed unaltered for some time to protect custom. Native practice, Europian determined music and African roused melodic exercises. As time advanced, societies attempted to stay consistent with their foundations while additionally progressing and modenizing.
what is the world doing to stop climate change and will it be enough?
