Thermal energy is transferred from the warm Gulf Stream ocean water to the cooler air above it by the process of convection?

True or false?
PLEASE HELP MEEE

Answers

Answer 1
This is true thermal energy is transferred from the warm gulf stream ocean water
Answer 2
The stream of something something is false

Related Questions

SOMEONE HELP QUICK! (question in the picture)

SOMEONE HELP QUICK! (question in the picture)

Answers

1) 4.8
2) 5.6
3)0.8
.............………

How does El Nino affect water supply?

please help its for my project

Answers

Answer:

During an El Niño event the trade winds weaken. Warm, nutrient-poor water is not pushed westward and comes to occupy the entire tropical Pacific Ocean... This warmer water has a devastating impact on their fishing crops which rely on cool waters to thrive.

Explanation:

hope it helps, please mark as brainliest

Explain the events that would cause these changes in velocity. For each claim, describe the thruster force and how that would result in the pod moving away from the station.

Claim 1: The thrusters caused the pod to move in the opposite direction.
Claim 2: The thrusters only slowed the pod, it didn’t stop; the pod hit the space station, which made it bounce and move in the opposite direction.

Claim 1 question: Firing the thrusters would have caused the pod to move in the opposite direction if . . .

Claim 2 Question: Firing the thrusters only slowed the pod, it didn’t stop; the pod hit the space station, which made it bounce and move in the opposite direction. This would happen if . . .

Answers

Answer: Claim 1

Explanation:

Answer: claim 1
Explain:

Describe what the action and reaction relationship is all about in Newton’s Third Law

Answers

For every action there is an equal opposite reaction
According to Newton's third law of motion, forces always act in equal but opposite pairs. Another way of saying this is for every action, there is an equal but opposite reaction. This means that when you push on a wall, the wall pushes back on you with a force equal in strength to the force you exerted.

Somebody please help this is due now

1. Define the term distance.

2. Define the term displacement.

3. What is the distance the soccer player
runs?

4. What is the displacement of the
soccer player?

Answers

Newton law of physics Anna Oop
Asset:
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what reasons can u give for the difference in speed for each cars?

Answers

Answer:

There are many factors that can affect the speed of a car, including:

Engine size and power: A car with a larger and more powerful engine will be able to accelerate faster and reach higher speeds than a car with a smaller engine.

Transmission: Cars with manual transmissions typically have better acceleration than those with automatic transmissions because the driver can control the gears and timing of the shift.

Aerodynamics: Cars that are designed with aerodynamic shapes and features, such as a low profile or smooth body, will be able to reach higher speeds and maintain them more easily than cars with less aerodynamic designs.

Weight: Cars that are lighter in weight will be able to accelerate faster and reach higher speeds than cars that are heavier.

Tires: Cars with wider tires will typically have more grip and better traction, which can allow them to reach higher speeds and handle better.

Suspension: Cars with better suspension systems will be able to maintain stability at high speeds and handle better.

Driving technique: The way a driver handles a car can also affect its speed, a skilled driver can make the most of the car's performance and get a better outcome.

Answer:

distance and time

Explanation:

Speed depends upon distance and time. So, if the distance is long but time is less, the speed will be high. On the other hand, if the distance is short and time is enough, the speed of the car will be slow.

Hope it helped. Pls mark it as the BRAINLIEST!

science, who ever answers this will get a brainlest

science, who ever answers this will get a brainlest

Answers

It’s the second one

Is horsepower the only thing to be considered when purchasing a piece of equipment?Explain.​

Answers

Answer:

Mostly yes

Explanation:

But you should consider,brand value, material used and lasting of the equipment also

1HP=720W

HP stands for horsepower

It's mostly used in pumps

Not necessarily. It should definitely be a factor, but the age of the piece should be in question as well as the brand, materials used and how fuel-efficient it is.

What are the formulas for Newton's 1,2,3 laws of motion?
How did he come up with the idea of his book?

Answers

Newton's three laws of motion can be summarized by the following formulas:

Law of Inertia, Newton's 1st Law of motion:

F = 0, or F = ma if there is an acceleration.

This means that if an object is at rest, it will remain at rest unless acted upon by an external force. Similarly, if an object is in motion, it will continue to move in a straight line at a constant speed unless acted upon by an external force.

Newton's second law of motion:

F = ma

This formula states that the acceleration of an object is directly proportional to the net force applied to the object and inversely proportional to its mass. In other words, the greater the force applied to an object, the greater its acceleration will be. Similarly, the greater the mass of an object, the smaller its acceleration will be for a given force.

Newton's third law of motion:

FAB = -FBA

This formula states that for every action, there is an equal and opposite reaction. In other words, when one object exerts a force on another object, the second object exerts an equal and opposite force back on the first object.

Isaac Newton's most famous book, "Philosophiæ Naturalis Principia Mathematica" (often called "the Principia"), was based on his own research and discoveries in mathematics and physics. The idea for the book came from his desire to develop a comprehensive system for explaining the workings of the natural world based on mathematical principles. He began working on the book in the 1660s, and it was first published in 1687.

For more information on Laws of motion,

https://brainly.com/question/29775827

F = 0, F = MA, FAB = FAB

Inertia, Acceleration, Action & Reaction

What does your body use to replace tissues and organs?

Answers

Answer:

the body produces stem cells

Explanation:

you body uses stem cells to replace tissues and organs

Explain what happens as the heart grows bigger.

Answers

When the heart grows bigger, a condition known as cardiac hypertrophy occurs. This can happen as a result of several factors, including high blood pressure, heart disease, and obesity.

Initially, the heart may grow bigger as a compensatory mechanism to try to keep up with increased demands for blood and oxygen. For example, if a person engages in regular exercise, their heart may enlarge to accommodate the increased demand for blood and oxygen to the muscles.

However, if the heart continues to grow over time, it can become less efficient at pumping blood and may develop structural abnormalities that increase the risk of heart failure, arrhythmias, and other complications.

In some cases, cardiac hypertrophy may be reversible if the underlying cause is treated, such as by managing high blood pressure or heart disease. However, if left untreated, hypertrophy can lead to irreversible damage to the heart muscle and may require more aggressive interventions, such as medication, surgery, or other medical procedures to manage the condition.
An enlarged heart may cause the heart to beat too fast or too slow. The irregular heartbeat (arrhythmia) may lead to fainting, cardiac arrest or sudden death.

How are deltas formed?
***NEEEDD HELPPP ON A TIMEE WILL MARK BRAINLY ***

erosion of softer rock

connection of channels

deposition from flow into a lake or an ocean

creation of large, flat areas by flooding deposits

Answers

Answer:

The answer should be C. Deposition from flow into a lake or an ocean.

Explanation:

A delta is formed when deposition of sediment flows into a small drop of land from an ocean or lake.  

Answer:

Deposition from flow into a lake or an ocean.

Explanation:

Please write in complete sentences to answer the following:
Give two examples of electromagnetic waves, explain how they are used, and explain why they are important in your life.
Points available:
1. First Type of EM wave (1 point), how it's used (2 points), why it's important (2 points)
2. Second Type of EM wave (1 point), how it's used (2 points), why it's important (2 points)

Answers

Answer:

Radio waves and the are various frequencies of radio waves are used for television and FM and AM radio broadcasts, military communications, mobile phones, ham radio, wireless computer networks, and numerous other communications applications. They are important because Radio waves are very widely used in modern technology for fixed and mobile radio communication, broadcasting, radar and radio navigation systems, communications satellites, wireless computer networks and many other applications.

Microwaves are widely used in modern technology, for example in point-to-point communication links, wireless networks, microwave radio relay networks, radar, satellite and spacecraft communication. They are important because microwaves play an increasingly wide role in heating and cooking food. They are absorbed by water and fat in foodstuffs (e.g., in the tissue of meats) and produce heat from the inside. In most cases, this reduces the cooking time a hundredfold.

Explanation:

Help me pls, I'm begging.

Help me pls, I'm begging.

Answers

physical scientists examine all the "stuff" or [hypothesis/questions] in the world. they also identify [conclusions] of [observation] and try to figure out what happens to the energy in the universe. the study of physical science makes it possible to understand how everything in the universe works. physical science explains what things are [? made?] of and it also explains [what makes up an object] from planets to dust

I found this so I'm not sure if its correct, but I hope it helps
1. Hypothesis
2.conclusion
3.observations
4.made
5.what make up the object

list both types of energy before skydiver jumps out of the plane and as the sky diver is diving.

list both types of energy before skydiver jumps out of the plane and as the sky diver is diving.

Answers

Answer : This is an example of Kenitic and potential energy

Explanation:

kenitic: the act of moving or motion

potential: not. moving YET

he was not moving when he was on the plane and had potential energy cause he wasn't getting pulled down and kenitic energy was when he was getting pulled down from force of gravity when he was getting pulled to the ground when he was skydiving

Kinetic and potential

PART A: The image shows a person looking at the Moon through a telescope. Describe how light travels from the sky to the viewer’s eye.

Part B
The light rays come close together as they travel from the large mirror to the small mirror. How do you think this affects the size and clarity of the image the viewer sees?

Part C
How does the eyepiece change the image for the viewer?

Part D
The eyepiece has a curved piece of glass that bends light rays toward the center. What is the bending of light called?

PART A: The image shows a person looking at the Moon through a telescope. Describe how light travels

Answers

Answer:

Describe how light travels from the sky to the viewer's eye. First, light from the sky travels into the concave mirror, which reflects the light to a smaller and flat mirror. Then, the small mirror reflects that light into the telescope's magnifying lens. This lens makes the light reach the viewer's eyes.

HELP PLZ! does the distance between particles of a liquid increase as the liquid in a thermometer increases?

Answers

Explanation:

The distance between particles increases, and the alcohol expands. As the alcohol expands, its volume increases. Alcohol pushes up the stem of the thermometer. The greater the kinetic energy of the alcohol particles, the more the alcohol expands.

Which of the following help the President carry out the laws of the land?

A cabinet, regulatory groups, agencies

B political parties, interest groups, cabinet

C citizens, regulatory groups, agencies

D cabinet, citizens, agencies

Answers

Answer: A

Explanation:

A, cabinet, regulatory groups, agencies

What type of weathering is RUSTING?

Answers

when a metal rusts, it’s called oxidation.
Oxidation

Oxidation is another kind of chemical weathering that occurs when oxygen combines with another substance and creates compounds called oxides. Rust, for example, is iron oxide.

Hunter pushed a couch across the room. He did 800 J of work in 20 seconds.
The couch weighed 500 N. How much power did he have?
A. 16,000 W
B. 1.6W
C. 800 W
D. 40 W

Hunter pushed a couch across the room. He did 800 J of work in 20 seconds.The couch weighed 500 N. How

Answers

Answer:

\(the \: answer \: for \: this \: question \: is \: d.40w\)

Explanation:

Greetings !

Given values Work(W)= 800Jtime(t) = 20 secondWeight = 500N

required value power(P) = ?

Solution:

Firstly, recall the work-power equation

work=power*timew=p*t

substitute known values to the equation

(800)=P*(20)

Solve, for P (power)

P=40.0w

Hunter had a power of 40 W while pushing the couch across the room. The correct answer is D. The correct answer is 40W.

Given:

Work (W) = 800 J

Time (t) = 20 seconds

Power is the rate at which work is done or the rate at which energy is transferred. It is calculated using the formula:

Power (P) = Work (W) ÷ Time (t)

Let's calculate the power:

Power (P) = 800 ÷ 20

Power (P) = 40 W

Therefore, Hunter had a power of 40 W while pushing the couch across the room. The correct answer is D.

To know more about the work and power:

https://brainly.com/question/19382734

#SPJ3

what is household product that refracts light?

Answers

Answer:

Air 1.00 300

Water 1.33 226

Glass 1.5 200

Diamond

Explanation:

Water because it reflects light

WILL RATE BRAINLIEST!!!
When you use electricity in your home,

which resources are powering it?

Research the energy resources used

to power your state’s electrical grid

(that’s what supplies your home with

electricity). In the space below or on

a separate sheet of paper, create an

informative handout to provide to the

people of your state.

Include the following information in your handout:

• Which state do you live in?

• What is the population of your state?

• What percent of the electricity in your state comes from

nonrenewable resources?

• What percent of the electricity in your state comes from

renewable resources?

• What percent of the electricity in your state comes from

nuclear energy?

• Which renewable resource is used the most in your state?

• What is an interesting fact about energy usage in your

state?

I live in United Arab Emarates/Dubai

Answers

Powering Your Home: Understanding Energy Resources in Dubai, United Arab Emirates

Dubai, one of the seven emirates of the United Arab Emirates, is a rapidly growing city with a population of over 3.3 million people. With the increase in population and development, the demand for electricity has also risen significantly. Have you ever wondered where the electricity that powers your home comes from? In this handout, we will provide you with information about the energy resources used to power the electrical grid in Dubai.

Nonrenewable Resources:

Dubai relies heavily on nonrenewable resources such as natural gas and oil to generate electricity. As per Dubai Electricity and Water Authority (DEWA), in 2020, 94% of the electricity generated in Dubai came from natural gas and 6% from coal.

Renewable Resources:

Dubai has been working to diversify its energy mix by investing in renewable resources. According to DEWA, 6% of Dubai's electricity in 2020 was generated from renewable sources, such as solar and waste-to-energy. DEWA has set a target to increase the share of renewable energy in Dubai's energy mix to 75% by 2050.

Nuclear Energy:

Dubai is also investing in nuclear energy to diversify its energy mix. The first nuclear power plant in the UAE, the Barakah Nuclear Energy Plant, started operations in 2020. It is expected to generate 5.6 GW of electricity and will contribute to reducing carbon emissions.

Most Used Renewable Resource:

Dubai has the world's largest single-site solar energy project, the Mohammed bin Rashid Al Maktoum Solar Park. It is a key component of Dubai's clean energy strategy, and its capacity is expected to reach 5 GW by 2030. The solar park uses photovoltaic solar panels to convert sunlight into electricity.

Interesting Fact:

Dubai is home to the world's tallest building, the Burj Khalifa, which has been designed to be energy-efficient. It uses a combination of technologies such as a high-performance glass facade, an efficient air-conditioning system, and a double-decker elevator system that reduces energy consumption by 20%.

Conclusion:

Dubai's energy mix is currently dominated by nonrenewable resources, with natural gas being the primary source of electricity generation. However, the city is making significant strides to increase the share of renewable energy and diversify its energy mix. By investing in nuclear energy and the Mohammed bin Rashid Al Maktoum Solar Park, Dubai is working towards achieving its goal of becoming a sustainable city and reducing its carbon footprint.

Answer: Windmills and solar panels

Explanation: It is used by solar energy from energy and friction with the atmosphere and CO2

Lab Report
Motion and Forces
It’s time to complete your Lab Report. Save the lab to your computer with the correct unit number, lab name, and your name at the end of the file name (e.g., U4_ Lab_MotionAndForces_Alice_Jones.doc).
Introduction
What was the purpose purpose of the experiment?
The purpose of the experiment is to test the hypothesis.
What were the independent, dependent, and control variables in your investigation? Describe the variables for each part of the experiment.


Write a hypothesis based on observations and scientific principles.
Type your answer here:
Experimental Methods
What tools did you use to collect your data?
Questionnaires and observations.
Write your procedure. List each step so that another student could follow the procedure and repeat your experiment.
Type your answer here:
Data and Observations
Record your observations.
Type your answer here:
Conclusions
What conclusions can you draw about how the sum of forces acting on an object affect its motion? Write an evidence-based claim.
Type your answer here:
Which mass, A, B, or C, was the greatest? Use the observations from your experiment and your knowledge of Newton’s laws of motion to write an evidence-based claim.
Type your answer here:
Make a model that shows the forces acting on two blocks on a flat, frictionless surface:
A 1 N block at rest
A 1 N block with 2 N of force applied in one horizontal direction
Include arrows to represent the forces and labels to indicate the magnitude of each force. Use your model to compare and explain the motion of each block.
Type your answer here:

Answers

Answer's C

Explanation: The matter that surrounding this whole planet or time and frequencies the motion and forces that people can't determine unless made a hypothesis

What are data?
A. Pieces of information recorded in an experiment
B. Sources that summarize a primary source
C. Educated guesses about the outcome of an experiment
D. Variables that are adjusted by the experimenter
SUBNIIT

Answers

Answer:

Data is pieces of information recorded in an experiment because data are individual pieces of factual answer recorded and used for the analysis

Explanation:

I hope this will help you :)

The Structure of Atoms

1. What two sub-atomic particles are located in the nucleus of the atom?

2. What is the difference between the atomic number & the mass number of an element?

3. Where is the majority of the mass located in an atom?

Answers

Answer:

1. protons and neutrons

2. the atomic number states the number of protons present and the mass number says the total number of protons and neutrons

3. nucleus

Explanation:

please can someone solve this question ​

please can someone solve this question

Answers

Answer:both diagrams are attached.

Explanation:

please can someone solve this question
please can someone solve this question

1 sentence telling me the topic of the story. In your own words.
3 sentences you copy straight from the magazine with "quotation" marks around it. This sentence proves that the topic is what you stated in the first sentence.
1 sentence telling me the conclusion. In your own words.
3 sentences you copy straight from the magazine with "quotation" marks around it. This sentence proves that the conclusion is what you stated in the sentence above this one
The average woodpecker smashes its beak against a hard surface more than 10,000 times a day. Any human who jolted their head like this would likely end up with a concussion. This traumatic brain injury is caused by a blow to the skull. So why doesn’t the constant hammering turn woodpeckers’ brains into mush? For years, it was assumed that woodpeckers had some kind of cushioning in their heads to protect their brains during pecking. Many scientists suggested that spongy bone in the birds’ skulls absorbed and lessened the shock of each impact (see Myth Buster: Hard Headed). This idea was repeated in scientific articles, textbooks, and informative plaques at zoos. Even though the concept “is often presented like a clear-cut fact, there haven’t been any real tests to prove it,” says Sam Van Wassenbergh. He’s a biologist who studies biomechanics, or how living things move, at the University of Antwerp in Belgium.SHOCK ABSORBER: Van Wassenbergh uses a spring-loaded hammer to show why a shock-absorbing skull would make a woodpecker less efficient at pecking. When you think about it, says Van Wassenbergh, the shock-absorbing skull idea doesn’t make much sense. Woodpecker drills into the wood in search of insects to eat. When the bird’s head accelerates forward, the movement generates kinetic energy. This energy of motion is transferred to the tree when the bird slams its beak against the trunk. If a woodpecker’s skull had to cushion, it would absorb some of this energy and decrease the force of the peck. Why would a bird that survives by pecking evolve to do it less effectively? Van Wassenbergh and his team decided to see what was really going on. First, the researchers recorded videos of woodpeckers’ heads in motion. To capture this rapid movement, the scientists needed special high-speed cameras. Each peck lasts only a fraction of a second! Van Wassenbergh’s team recorded videos of six woodpeckers from three species and analyzed the footage. The researchers used a computer to track three points on each bird’s head: one on the skull and two on the beak. The scientists hypothesized that if the birds’ skulls had shock absorbers, the footage would show a “squishing” of the space between the skull and beak—like when a spring compresses. But that didn’t happen. Instead, the birds’ heads moved as one stiff unit, like a hammer. Next, the team wanted to demonstrate why this adaptation would be helpful to the birds. Using computer models, the scientists simulated woodpecker skulls with and without shock absorbers. Then the researchers compared the force of the pecks. “The pecking performance was greatly reduced in the skull with a shock absorber,” says Maja Mielke, a biologist who worked on the study. With shock absorbers, says Mielke, “the poor birds would need to pound even harder to reach the same results.” For a woodpecker, having a shock-absorbing skull would simply be a waste of energy. Science World originally published this diagram in our May 10, 2021, issue. It was based on scientists’ beliefs about woodpecker anatomy at the time. Here it is again—updated based on new research. MYTH: The skull is made of spongy bone that cushions and protects the brain from impactBUSTED! The skull is hard enough to protect the bird from injury, but it doesn’t cushion The eyes have a special membrane that protects them from flying splinters and wood dust.MYTH: Neck muscles are strong and stiff enough to absorb the shock of each peck BUSTED! Stiff neck muscles do not absorb shock—in fact, they help increase the force of each peck.MYTH: The tongue wraps completely around the outside of the skull, providing an additional level of cushioning, and can extend to probe for food inside holes made by the birdBUSTED! The tongue does not provide any observable cushioning. The beak is connected to the skull with thick bone that prevents jolts and vibrations. NEW RESEARCH SHOWS: The woodpecker’s brain is small, which helps prevent concussions that might occur in a larger animal. If woodpeckers’ skulls don’t absorb shock, then why doesn’t constant pecking damage the birds’ brains? To answer this question, the researchers calculated how harmful the blows from pecking actually are. It turns out the hits aren’t that dangerous because the birds’ brains are so small. “Small masses can tolerate stronger impact forces without being damaged,” says Mielke.

Answers

Answer:

 The topic of the story is about how woodpeckers can peck without causing damage to their brains.

"The average woodpecker smashes its beak against a hard surface more than 10,000 times a day."

"This traumatic brain injury is caused by a blow to the skull."

"So why doesn’t the constant hammering turn woodpeckers’ brains into mush?"

The conclusion of the story is that woodpeckers don't get brain damage from pecking because their brains are small, which allows them to handle the force of the pecks.

"Small masses can tolerate stronger impact forces without being damaged,"

"The hits aren’t that dangerous because the birds’ brains are so small."

"To answer this question, the researchers calculated how harmful the blows from pecking actually are."

Explanation:

When there is an imbalance in a body system, and the body cannot maintain homeostasis, how might other systems respond?

Answers

Answer:  Ok, when the is and imbalance in a body system, that balance is shifted or disrupted and homeostasis is not maintained, the results may not allow normal functioning of the organism, causing deseases

When you drop something, first of all it accelerates.
The faster it falls, the bigger the force of ______ that acts on it.
choose from the list to complete the sentence:
friction gravity air pressure

note: apparently the answer is friction but it doesn't make sense to me so please explain.

Answers

The faster an object is going, the more resistance there will be. An example of this would be if you're running the faster you run, the more air is going against you.

I hope this helps!

I think its pressure, please dont take my word for it, take this with a grain of salt, Have a great day<3

Please helppppp and I will mark you Brainliest

Please helppppp and I will mark you Brainliest

Answers

Answer:

1.e

2.i

3.h

4.j

5.c

6.d

7.b

8.f

9.g

10.a

Explanation:

E I h j c D B F G A
Other Questions
Find the midpoint of the line segment. Please hurry 15 points! What is the current situation in Vietnam Which multiplication expression can be used to check this division problem: StartFraction 2 Over 5 EndFraction divided by StartFraction 4 Over 15 EndFraction = StartFraction 3 Over 2 EndFraction Two-fifths times StartFraction 4 Over 15 EndFraction Three-halves times StartFraction 4 Over 15 EndFraction Three-halves times StartFraction 15 Over 4 EndFraction Five-halves times StartFraction 15 Over 4 EndFraction Which core element of a data center infrastructure provides the data communication paths between clients and servers? I need help on this, I couldnt find the write subject for this but its sociology and no amount of good going answers this question properly Why are Creoles not included as a revolution against white supremacy? which of the following examinations involves complex issues that require more advanced knowledge of the internal revenue laws and accounting skills assume that the line that appears to. e the diameter is the diameter what is the. value of x Can someone explain about vignette in literature? Please help Because I Can't Play Videogame"s :( King george iii hired german mercenaries to increase the strength of his army. These mercenaries were called. 1. En muchos pases hispanos, el gobierno ofrece servicios mdicos ____. Use synthetic subdivision to determine if -2 is a root of f(x)= -3x^4+2x^2-3x+4 which statments are true about a , b, and c? check all that apply. a physical therapist works with a patient who is post total knee arthroplasty. which of the following activities would be the most appropriate to delegate to a physical therapy aide? According to some hostorians, which marks the beginning of the us civil war?a. the battle of antietam b. the battle of bunker hillc. the battle of fort sumterd. the battle of bull rune. the battle of Gettysburg Qu es la literatura? Firms will typically maintain a list of research and development projects ranked by expected rate of return. Expected rate of return is defined as: 3. Consider a fluid motion at a velocity = Vol with a space-time varying density such that, n(x, t) = no etext Find the total time change of n(x, t) as seen by an observer co-moving with the flu prove that rad Z={0}explain by algebra (Since no nonzero integer is divisible by every prime, rad Z = {0})Hint :Theorem 3-30. (Krull-Zorn).Definition 321. The radical of a ring (R, +,-), denoted by rad R, is the set rad R NM (A, 1..) is a muximal ideal of (R, +,-)). If rad R = {0}, then we say (R, +,-) is a ring without radical or is a semi- simple ring. The radical always exists, since we know hy Theorem 3-30 that any ring con- tains at least one maximal ideal. It is also immediate from the definition that the triple (ruud R, +,.) forms an ideal of (R, +,-). Example 332. The ring of integers (2, +,-) is a semisimple ring. For, according to Theorem 3-36, the maximal ideals of (2, t, .) are precisely the w.africa-sat.com 192 RING THEORY 34 principal ideals ((p), +,-), where p is a prime; that is, rad Z = {(p) pa prime number). na Since no nonzero integer is divisible by every prime, rad Z = {0}. First, let us establish a connection between the radical and invertibility of ring elements. At the risk of being repetitious, we recall our convention that "ring" always means commutative ring with identity.