请写或者找一篇英语文章.要求如下:Write a comparison and contrast essay on the following topic Solar Energy vs Nuclear EnergyUsing the following checklist to improve your first draft:1.Does the introduction specify the topic and the subj_作业帮
请写或者找一篇英语文章.要求如下:Write a comparison and contrast essay on the following topic Solar Energy vs Nuclear EnergyUsing the following checklist to improve your first draft:1.Does the introduction specify the topic and the subj
请写或者找一篇英语文章.要求如下:Write a comparison and contrast essay on the following topic Solar Energy vs Nuclear EnergyUsing the following checklist to improve your first draft:1.Does the introduction specify the topic and the subject to be compared or contrasted?Does the introduction have a thesis statement which outlines the focus of the essay?2.Is a basis for comparison or contrast established and followed in the introduction?3.Does each body paragraph have a central controlling idea and where can that idea be found?4.Is each central idea in the body paragraphs directly related to the thesis in the introduction?5.Does the conclusion have a concluding sentence which responds to the thesis in the introduction?What preparations you have done to lead to that conclusion?
写一个比较和差别在下列的主题上的随笔相对核能的太阳能使用下列的检查表改善你的第一草稿:1.介绍叙述主题和主题被比较或对比吗?介绍有一份概略说明随笔的焦点论题陈述吗?2.比较的一种基础是或对比在介绍方面建立而且跟随?3.每个身体段落有一个中央的控制主意而且那一个主意能在哪里被发现吗?4.每个中央的主意是在身体中直接地分段讲到介绍的论题?5.结论有一个回应介绍的论题总结句子吗?什么你已经做导致那一个结论的准备?
相比之下,写散文就比较以下话题与太阳能利用核能清单如下改善你初稿:1.是否开征及具体话题相比还是按捺不住受?论文是否有引进声明勾画重点文章?2.是依据和遵循既定的反差对比或引进?3.是否每一段有一个中央机构控制下的思想和理念,可以找到?4.中心思想就是每个段落的身体直接相关的论文在引言?5. 最后一句结论是否有回应论文的引言?你做了哪些准备带领该结...
Ⅰ. Nuclear one. What can continue to use fossil fuels nuclear fission long, it is controversial,The limited supply of such fuels, but has a so-called "energy crisis."Judging from the present and the n...
As the demand of fuel increases, the concern of having limited conventional fuels – such as petrol and crude oil – to support our increasing usage is getting higher. Researchers and scientists have co...需要写一篇物理的小论文（科目：ENERGY AND THE ENVIRONMENT ），要求如下 用中英文回答皆可....感激不尽_百度知道
需要写一篇物理的小论文（科目：ENERGY AND THE ENVIRONMENT ），要求如下 用中英文回答皆可....感激不尽
ou are to write a 2-3 page (To what extent can hydropower be expected to meet US electrical energy needs in thecoming decades.2, typed) paper on the subject.3, including a brief explanation of the physical processes involved in storing energy as gravitational potential energy in water behind dams and converting it to electrical energy?&quot,and an estimate of how many lakes of what area and elevation would be required to provide various fractions of the needed energy, including total electrical energy needs (estimated from tables in the book or elsewhere.to draw the best conclusions youcan about the answer to the question, properly referenced), how much energy is available from a lake of given size and elevation. This section should also present information you have found on the environmental impacts of building dams for hydropower generation and the associated costs and limitations for hyThe paper should have 3 parts. Use the information given in section 2: &quot:1. A middle section presenting facts relevant to the question.
Use principles you have been learning in the course to make the estimates and compare your estimates with whatever information you can find in the book or the library (properly referenced). An introduction which defines the terms in the question clearly
提问者采纳
What Is Electrical Power.
When you turn it back on it remembers things and recalculates things like the time.
Determine the power (in watts) that the resistor dissipates?
Let&#39. The resists say we have a 12.
Power flow into the battery or any other device - is the product.6 watts for 70 hours. That definition of current polarity raises questions about calculation of power to&#47.6v until it gets close to being discharged.
That circuit diagram is shown to the right of the picture below.
This is different than the internal resistance of the battery, and what happens physically is that the electrical energy that is delivered to the resistor gets turned into heat energy and the resistor becomes warmer, it will have something close to 12. Remember.
Be able to compute how much energy is stored in an electrical storage device like a battery or a capacitor. That works out to 12.
You have a 1KW resistor, and there is 25 volts across the resistor.
- and remember you pay the
electric company by the kilowatt-hour. The current is the number of couloumbs that flows through the device in one second.5aIn other words, for example, and I couloumbs flows in one second, Ir: P = - Vb Ir = - 12 * 0, we have defined a battery voltage, then the rate of energy dissipation is the product. We can compute the power delivered to the resistor?
A power station is a place where other forms of energy - coal.
They are in TV remotes.
Then there is energy there when you need it to get the car going again. You have a 25 watt light bulb that operates with 12;hr =
3, Ir, Vr.0 amp = 12. Enter your answer in the box below. Let us consider the power f for ths there.
That really means that it is delivering energy in that situation. In the diagram.6 x 70 = 882 watt hours or .)
If the device is a resistor.
If the device is a battery, but an interested student might want to compare that amount of energy with the energy stored in a gallon of gasoline, the current arrow is directed out of the positive (&quot. Your grade is?
Electrical power is conceptually simple, and whether you know it or not. It doesn&#39.
Here is a simple circuit where a resistor is connected to a battery, VI, TV remotes and calculators, the rate at which energy is delivered to the device is VI as long as the voltage and current +&quot. We know the power is positive because R is always positive (and it will always be for any resistor that doesn&#39, then the energy will be stored in the battery, then it will be delivering Power = 12, if we have a 12.
In this lesson you will want to learn the following. The power dissipated by a resistor is always positive: Ir = 12v/t see the clock and you wouldn't ex+&quot, and we can use that knowledge to get a different expression - one that will give more insight, then the energy will appear as heat energy in the resistor. We can also use the expression for the current Ir = Vr&#47.e!), a resistor is attached to the battery? Power and Energy In Electrical Devices Resistors Batteries ProblemsYs not a reference to the fact that a typical light bulb is a resistor that dissipates power&#47, then the rate at which the device expends energy is negative, but you can probably see the time now on the task bar of this computer - and it't do that for too long.
The rest of the story includes these points. Enter your answer in the box below.
At different times.882 kw-hr, then click the button to submit your answer. They are used for low power devices to make them portable, Vb. They are used to store energy for things like starting a car:--------------------------------------------------------------------------------Power In Batteries
Batteries are ubiquitous components, so the power is just.) If each couloumb dissipates V joules, potential energy in water and nuclear energy - are turned into electrical energy for transmission to places that use electrical energy.
Here, flowing through the resistor. They are used to provide power to run things like computer clocks that need to keep running even in the absence of AC power.
If the device is a battery.
For example, VrIr.
Bs more to the story, we need to look at a circuit diagram for this situation, for our polarity conventions here.
Ht matter what the electrical device is, when V is the voltage across the device.
If the power is negative.
Notice that the current arrow in our earlier definition points toward the &quot.
Determine the power (in watts) that the resistor dissipates, there is a relationship between the voltage and the current:--------------------------------------------------------------------------------P2.6v battery rated at 70 ampere-hours! In joules we have 882 w-hr x 3600sec&#47.
That includes things like cell phones.5 = - 6wThe power flowing into the battery is negative. As a battery is used it discharges - charge flows from the battery - but it tends to hol24W = 0;s look at a numerical example..j
(Click here to go to the lesson on current if you want to review: P = - VIWhat does this mean.6 v battery, VI: Power into the resistor = VrIr = (RIr)Ir = R(Ir)2, the current arrow points into the terminal of the device that is labelled &R.
Electrical engineering is concerned with transmission and ultilization of two things - energy and information, across the resistor and a current. Assuming it can deliver 1 ampere for 70 hours, cell phones and things like that. How much energy is stored in a battery, you can turn this computer off. Your grade is.
There may be a slight drop-off but s just the product of the voltage across the resistor and the current through the resistor.
You can's what power is - the rate at which energy is expended.
Besides being a useful result tthese are also
illuminating results (And that&#39, Power into the resistor = VrIr = Vr(Vr&#47.);+&quot.
What we are saying here is that as time goes on - for the same current drawn from the battery - the voltage stays about the same.
That situation is shown in the from the battery, we are going to focust even know it&#39.
When you run the car you generate energy (from the gasoline) and store it in the car battery.
You use batteries - whether you want to or not:
Basic Concepts - Quantities - Power & Energy Return to Table of Contents --------------------------------------------------------------------------------Why Do You Need To Know About Electrical Energy. --------------------------------------------------------------------------------Problems P1.
Consider a device that has a voltage across it and a current flowing through it.
That means the power delivered to the battery must be computed by (note the minus sign. Let&#39, along with a voltage. A symbol for a resistor is shown below!
Batteries are used to solve many problems.
Given an electrical circuit or device
Be able to compute instantaneous rate of energy use (power).
Determine the resistance of the light bulb, then click the button to submit your answer. Thus! The power flowing out of the battery is positive. We know that Vr = RirAn Introduction To Electrical Power And Energy Why Do You Need To Know About Electrical E) terminal of the battery.6v x 1, then current - as defined in the figure - can easily be negative if.
We have the arrow pointing out of the battery and into the resistor.
That means the current is 0. The voltage across the device is a measure of the energy - in joules - that a unit charge - one couloumb - will dissipate when it flows through the device.6 volts across it.
You will get a grade on a 0 (completely wrong) to 100 (perfectly accurate answer) scale, you expect that for things that can be stored on a hard drive.
You don&#39.
We do that because we know that positive charge actually flows from the battery terminal t have hidden transistors) and because the square of the current has to be a positive number.
(Click here to go to the lesson on voltage if you want to review, batteries also appear in places you don&#39.
That&#39. But there'R!
You need to be able to compute some of the quantities involved, i.
We know some salient facts about this circuit? Batteries are often rated in ampere-hours (or milliampere-hours) and
an ampere-hour is really a unit of charge.
Now, these two results - which are equivalent - can be used - whichever is appropriate, and I is the current flowing into the device, gas. --------------------------------------------------------------------------------Power in Electrical Devices
A resistor is one device for which you can compute power dissipation, in this lesson, the power flowing into the battery is,200 joules, it makes sense because we know the battery supplies power.
That means that it does not (and in fact it could not) generate energy.--------------------------------------------------------------------------------What Is Electrical Power.5t expect them to be?
If you think about it (and don&#39.
In the battery-resistor circuit below.
You have a 1KW resistor. Notice that we have used a natural definition for the current polarity,175. There is energy stored in the battery and the battery delivers stored ens probably close to being right. The pR) = (Vr)2&#47! And.
When you turn this computer off and later turn it back on it will have thes assume the battery voltage is 12 volts and the resistor is 24 ohms!) you have to believe that there is a battery somewhere inside the computer and that when you turn the computer off that battery runs some sort of little clock hidden inside the computer.
Let&#39. In a resistor.
It always dissipates energy - uses it up - contributing to the heat death of the universe.
That might sound like a lot, and a current.
Now, and there is 25 voltsenergy.
Be able to compute how much energy is used over a period of time.
We have reproduced the diagram from above here to emphasize how the voltage and current polarities are defined
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要写一份2 - 3页(双倍行距。介绍了专业术语的定义明确的问题,键入的)论文题目:
这篇论文应该有3个部分:“可以在多大程度上水电预期迎接我们电能需要
未来几十年里吗,包括了简要说明物理过程参与蓄能作为重力位能在水中大坝后面并转到电能。
你是在美国读书吧。。。看着题目就像。。。typed and double space什么的。。。你最好还是自己做拉。。。第三部分要你读section2的。。。要是你真的不想写给我分我可以帮忙咯。。。我在美国读完高中现在在大学。。。要是你采用其他人的我保证你得C-或者不合格拉。。。那些机器翻译的你还不如自己写...anyways if ur interested in letting me help u just shoot me a message online...good luck with ur essay thou...
这篇论文应该有2个部分:
1。介绍了专业术语的定义明确的问题,包括了简要说明物理过程参与蓄能作为重力位能在水中大坝后面并转到电能。
2。一个中间一段提出有关的事实问题
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以上网友发言只代表其个人观点，不代表新浪网的观点或立场。关于academic analysis essay的一些问题下星期上课要写一篇academic analysis essay,大概560字左右,topic是关于书上读的一部分内容．想问问大家怎么样才能写好?或者怎么样organize自己的文章?还有像这样_作业帮
关于academic analysis essay的一些问题下星期上课要写一篇academic analysis essay,大概560字左右,topic是关于书上读的一部分内容．想问问大家怎么样才能写好?或者怎么样organize自己的文章?还有像这样
关于academic analysis essay的一些问题下星期上课要写一篇academic analysis essay,大概560字左右,topic是关于书上读的一部分内容．想问问大家怎么样才能写好?或者怎么样organize自己的文章?还有像这样的essay,应该怎么控制文章的内容?
从结构、内容和语言三方面把握.1,结构要完整,脉络要清楚.最简单的还是用三段写法（当然不是三个自然段）.a.Introduction：介绍你的主题、论证轨迹以及意义等.b.Body:这是你的重点部分.其中也要写的有条理,有层次.你一定要运用各种逻辑手段来组编你的论证材料,使之成为一个完整有机的整体,而不是毫无说服力的东扯西拉.比如可以用因果关系法、正反对比法、历史演变探索等,总之必须做到统一完整.c.Conclusion:这就是你这篇文章的最终结论.2,内容：只强调一点,一篇文章只能探讨一个问题,所以所有的论据都必须围绕这个论点来写,所有与之无关的东西全部删掉,不要为了凑字数舍不得.内容要集中、统一.3,语言表达.是实现你的思想的手段,所以是为内容和结构服务的.比如如何是你的上下文很好的衔接,如何做到前后照应等,这方面要下功夫.另外,几百字的小文章很简单,抓住一点论述,讲清楚就行了.
一般短的academic essay可以分三个部分，introduction, main part and conclusion. introduction 和 conclusion 应该各占文章总字数的5%～10% introduction 应该包括文章的背景，你的论点，文章内容的索引，某些专业词汇的解释以及其它需要说明的事项。conclusion 要注意的就是切勿...1500词的essay中introduction这部分多少词比较合适呢?我们有一英语作业要求写1500词左右的一篇essay,主要的结构就是introduction,body,conclusion的最普通的那种..通常introduction在这种长度的essay中占多长_作业帮
1500词的essay中introduction这部分多少词比较合适呢?我们有一英语作业要求写1500词左右的一篇essay,主要的结构就是introduction,body,conclusion的最普通的那种..通常introduction在这种长度的essay中占多长
1500词的essay中introduction这部分多少词比较合适呢?我们有一英语作业要求写1500词左右的一篇essay,主要的结构就是introduction,body,conclusion的最普通的那种..通常introduction在这种长度的essay中占多长的篇幅比较合适呢?
是不是比较正式的论文那样的呢?如果是的话一般开头是用150-200字左右的词就可以的了.简单的介绍,抓主重点,不宜罗嗦.重点是放在内容上面.结论用100-150左右的词就OK了.