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Best Online Stock Trading Brokers for 2018 If you’re looking for a way to build more wealth in 2018, getting started with one of the best online brokerage accounts is a solid first step. Doing so will allow you to invest outside your traditional retirement accounts and on your own terms. The best part is, the best online brokerage firms charge little or no fees and offer excellent resources that can help you learn more about investing along the way. Of course, not all brokerage firms are created equal, and that’s why we took the time to break down each of their details and rank the top options on an array of factors. If you’re looking for a new way to invest this year and are ready to strike out on your own, the following online brokerage accounts should be at the top of your list.What Matters When You Trade Stocks on Your Own? Managing your own money can be a stressful endeavor. To minimize this, and to minimize information overload that tends to come from watching the markets 24/7, there are a few must-haves to look for in an online broker. Clean interface. When I trade, I want to be able to easily find my order entry ticket. I don’t want it buried under a number of drop downs. This interface should have intuitive access to see your balance, available cash, positions with real time P/L and all be easily navigated. Quick access to basic charting. A chart tells me where the stock has been recently. I don’t trade minute to minute anymore, so I don’t need complex tools like stochastics or retracement lines. All that’s important is that I have a basic chart on a yearly, monthly, weekly, daily and intra day time period. I use a chart to see current price relative to those time periods, mainly to avoid purchasing at a bad price. Low fees. One of the biggest roadblocks to building wealth is fees incurred to invest your hard-earned dollars. Because the fees charged by different brokerage firms vary so dramatically, it’s crucial to seek out options that charge low fees (or no fees) for account management and trades. There are over 50 online brokerages where you can open an account. Beyond the my three rules above, best online brokerage accounts aren’t just for trading stocks. Sure, many of them started as online stock trading accounts, but now they’re full-fledged trading, saving, investing, retirement planning, and banking machines. This industry is more complex than the average person thinks. You shouldn’t just pick any online broker and sign up for an account. The best online broker for one person is often completely different for the next person. Use this resource as a guide to your decision process. Figure out what features are best for you, and make your selection. What Makes a Great Online Broker? I analyzed a number of elements to come to my decision on which brokers are the best. Later in this post, I provide full details on how I selected the best online brokerages. When you take all the features, resources, trading platforms, and technology into account (while also considering every type of trader), the full-service brokers, like E*TRADE and TD Ameritrade are the best for the largest number of people. For those simply looking to make cheap trades, I would recommend going with Optionshouse. If you’re a very advanced trader, high-volume trader, or a professional who manages money, I recommend going with Interactive Brokers. However, I didn’t include Interactive Brokers on my list because they’re best for a very small group of traders and the platform is very complex. Top Qualities of Standout Online Trading Platforms Quality trading tools and technology Multiple trading platforms for all levels of traders Excellent mobile trading features Solid navigation that displays the relevant information where you want it Quality educational resources and research for trader development There’s more to selecting an online broker than price. You have to consider the resources you’re getting for the cost you pay per trade. For example, my colleague, who is also an ex-trader, likes to use a combination of stock and options trade in his longer-term trading. He recently switched over to Fidelity because he really liked the cash management features, but was very disappointed by complex order entry, sub-par options execution and frustrating navigation. He’s currently making the switch to one of the brokers I profile here.
Best Online Stock Trading Brokers for 2018 If you’re looking for a way to build more wealth in 2018, getting started with one of the best online brokerage accounts is a solid first step. Doing so will allow you to invest outside your traditional retirement accounts and on your own terms. The best part is, the best online brokerage firms charge little or no fees and offer excellent resources that can help you learn more about investing along the way. Of course, not all brokerage firms are created equal, and that’s why we took the time to break down each of their details and rank the top options on an array of factors. If you’re looking for a new way to invest this year and are ready to strike out on your own, the following online brokerage accounts should be at the top of your list.What Matters When You Trade Stocks on Your Own? Managing your own money can be a stressful endeavor. To minimize this, and to minimize information overload that tends to come from watching the markets 24/7, there are a few must-haves to look for in an online broker. Clean interface. When I trade, I want to be able to easily find my order entry ticket. I don’t want it buried under a number of drop downs. This interface should have intuitive access to see your balance, available cash, positions with real time P/L and all be easily navigated. Quick access to basic charting. A chart tells me where the stock has been recently. I don’t trade minute to minute anymore, so I don’t need complex tools like stochastics or retracement lines. All that’s important is that I have a basic chart on a yearly, monthly, weekly, daily and intra day time period. I use a chart to see current price relative to those time periods, mainly to avoid purchasing at a bad price. Low fees. One of the biggest roadblocks to building wealth is fees incurred to invest your hard-earned dollars. Because the fees charged by different brokerage firms vary so dramatically, it’s crucial to seek out options that charge low fees (or no fees) for account management and trades. There are over 50 online brokerages where you can open an account. Beyond the my three rules above, best online brokerage accounts aren’t just for trading stocks. Sure, many of them started as online stock trading accounts, but now they’re full-fledged trading, saving, investing, retirement planning, and banking machines. This industry is more complex than the average person thinks. You shouldn’t just pick any online broker and sign up for an account. The best online broker for one person is often completely different for the next person. Use this resource as a guide to your decision process. Figure out what features are best for you, and make your selection. What Makes a Great Online Broker? I analyzed a number of elements to come to my decision on which brokers are the best. Later in this post, I provide full details on how I selected the best online brokerages. When you take all the features, resources, trading platforms, and technology into account (while also considering every type of trader), the full-service brokers, like E*TRADE and TD Ameritrade are the best for the largest number of people. For those simply looking to make cheap trades, I would recommend going with Optionshouse. If you’re a very advanced trader, high-volume trader, or a professional who manages money, I recommend going with Interactive Brokers. However, I didn’t include Interactive Brokers on my list because they’re best for a very small group of traders and the platform is very complex. Top Qualities of Standout Online Trading Platforms Quality trading tools and technology Multiple trading platforms for all levels of traders Excellent mobile trading features Solid navigation that displays the relevant information where you want it Quality educational resources and research for trader development There’s more to selecting an online broker than price. You have to consider the resources you’re getting for the cost you pay per trade. For example, my colleague, who is also an ex-trader, likes to use a combination of stock and options trade in his longer-term trading. He recently switched over to Fidelity because he really liked the cash management features, but was very disappointed by complex order entry, sub-par options execution and frustrating navigation. He’s currently making the switch to one of the brokers I profile here.

Perpindahan Kalor Secara Konveksi Alamiah

Perpindahan kalor tidak hanya melalui mediator atau medium (konduktor), tetapi juga melalui anutan dari medium itu sendiri yang dikenal dengan istilah konveksi. Zat cair dan gas umumnya bukan penghantar kalor yang sangat baik (isolator). Meskipun demikian keduanya sanggup mentransfer kalor cukup cepat dengan konveksi. Perpindahan kalor secara konveksi merupakan cara perpindahan kalor dengan diikuti oleh mediumnya. Bila pada perpindahan kalor secara konduksi melibatkan molekul (atau elektron) yang hanya bergerak dalam jarak yang kecil dan bertumbukan, konveksi melibatkan pergerakan molekul dalam jarak yang besar. Ada dua cara perpindahan kalor melalui anutan (konveksi) yakni konveksi secara alamiah dan konveksi secara paksa. Pada kesempatan ini, akan mengulas ihwal perpindahan kalor secara konveksi alamiah.

Konveksi Alamiah Pada zat Cair
Seperti yang sudah dibahas pada postingan sebelumnya pada pemuaian volume pada zat cair dijelaskan bahwa bila zat cair dipanaskan atau diberika kalor maka volumenya akan memuai. Massa zat cair tetap sedangkan volumenya bertambah akhirnya massa jenisnya akan mengecil. Karena massa jenisnya berkurang maka air ini menjadi lebih ringan dan naik ke atas. Tempatnya kemudian digantikan oleh air yang lebih hambar dari atas, yang turun alasannya yakni massa jenisnya lebih besar. Gerakan atau sirkulasi air tersebut dinamakan arus konveksi.
Perpindahan kalor tidak hanya melalui mediator atau medium  Perpindahan Kalor Secara Konveksi Alamiah

Penerapan konveksi kalor dalam air pada kehidupan sehari-hari yakni pada ketika kita memanaskan air dalam ketel. Pada ketika kita memanaskan air dengan memakai ketel selain terjadi bencana konveksi juga terjadi perpindahan kalor secara konduksi. 

Konveksi Alamiah pada Gas (Udara)
Arus konveksi pada udara atau gas terjadi ketika udara panas naik dan udara yang lebih hambar turun. Konveksi udara sanggup dilihat pada gambar di bawah. Jika lilin dinyalakan akan terjadi anutan udara panas dalam alat. Dengan memakai asap dari obat nyamuk yang dibakar, anutan udara terlihat. Udara panas akan naik dan udara hambar akan turun. 
Perpindahan kalor tidak hanya melalui mediator atau medium  Perpindahan Kalor Secara Konveksi Alamiah

Penerapan konsep perpindahan kalor secara konveksi alamiah udara pada kehidupan sehari-hari sanggup dilihat pada terjadinya angin bahari dan angin darat. Pada siang hari daratan lebih cepat panas dari pada lautan. Akibatnya udara di atas daratan naik, dan kekosongan tersebut akan digantikan oleh udara yang lebih hambar dari atas bahari yang bertiup ke darat, maka terjadilah angin laut. Sedangkan, pada malam hari daratan lebih cepat hambar dari pada lautan, alasannya yakni daratan lebih cepat melepaskan kalor. Akibatnya udara panas di lautan naik dan kekosongan tersebut digantikan oleh udara yang lebih hambar dari atas daratan yang bertiup ke laut, maka terjadilah angin darat.

Besarnya energi (kalor) yang dipindahkan persatuan waktu pada konveksi secara alamiah akan sebanding dengan luas permukaan benda yang bersentuhan dengan fluida dengan beda suhu ΔT. Secara matematis ditulis:

Q/t = h.A.ΔT

dengan:
Q = jumlah kalor yang dipindahkan (J)
t = waktu terjadi anutan kalor (s)
h = koefisien konveksi (W/m2K)
A = luas permukaan (m2)
ΔT = beda suhu antara benda dan fluida (K)

Untuk memantapkan pemahaman Anda ihwal perpindahan kalor secara konveksi alamiah, silahkan simak dan pahami pola soal di bawah ini.

Contoh Soal
Suatu panci pemanas air terbuat dari materi tertentu memiliki luas permukaan yang bersentuhan dengan air 200 cm2. Jika suhu materi tersebut 90°C dan suhu air 80°C dan menghasilkan jumlah kalor yang dipindahkan secara konveksi per sekonnya sebesar 0,8 J/s maka hitunglah besar nilai koefisien konveksi materi tersebut.

Penyelesaian:
Diketahui:
A = 200 cm2 = 0,02 m2
ΔT = 90°C – 80°C = 10K
Q/t = 0,8 J/s = 0,8 W

Ditanyakan: h = ?

Jawab:
Q/t = h.A.ΔT
0,8 J/s = h. 0,02 m2. 10K
h = 4 W/m2K

Nah demikian materi ihwal perpindahan kalor secara konveksi alamiah, jikalau ada permasalahan atau hambatan dalam memahami materi ini, silahkan tanyakan pada kolom kometar. Kita niscaya bisa.
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