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Rick Cavallaro and John Borton have built a cart that moves 2.86 times the speed of the wind, moving straight downwind. That may seem impossible, but after a year of tinkering and some financial assistance from Google and Joby Energy, they did it. Don't believe me? Check out the video. Keep a weather eye out for the green flag at 0:35. Notice how it's blowing the exact opposite direction of the orange wind socks on the cart? That's because the cart is going faster than the wind.

The cart is quite aerodynamic, so it makes a crappy sail, but it's still a sail. The wind gives it a push, and the car starts to roll, however slowly. As it moves along the ground, the wheels turn. At 0 kph the cart has an air speed (relative to the 10 kph wind) of -10 kph. As it gets rolling, it will catch up to the wind in velocity: at 5 kph ground speed, it has a -5 kph relative air speed, and at 10 kph ground speed, it has a relative air speed of 0 kph. At 10 kph ground speed, the cart is just like the balloon, and would not beat the balloon in a race. But unlike the balloon, the cart has a 17-foot propeller linked by a complicated drive train to the wheels. And it's the wheels that provide the work to turn the propeller. Remember that: The wheels turn the prop. Not the wind. Not magic pixie dust. The wheels turn the propeller. That's important. At 0 kph air speed, the propeller, sections of which have already been pulling on the car, really begins to bite on the air. It pulls the car forward exactly as a propeller pulls an airplane forward. The ground speed of the car increases, turning the wheels faster, which turn the propeller even faster, adding yet more acceleration. And now the whole project seems ridiculous,because everyone knows a perpetual motion machine is impossible. But the wind never stops adding power to the system. Come back to the difference between the relative air speed and the ground speed. In the example, the cart reaches a ground speed of 10 kph, and relative air speed of 0 kph. The propeller kicks in and the cart accelerates: Ground speed rises to 20 kph, with relative air speed of 10 kph; then 30 kph ground speed with relative air speed of 20 kph, then it finally reaches a top speed of 28.6 kph, with a relative air speed of 18.6 kph (meaning, going 18.6 kph faster than the wind). There's some loss to friction and to the drive train, but generally the wheels are always doing 10 kph-worth more work then the propeller, because the

After years of rumors and speculations, Samsung's foldable smartphone, popularly known as the Galaxy X, is finally coming to reality. No, the device hasn't been unveiled, but Samsung is moving ahead with development, and sources have confirmed that the phone will run a special Android version.

Gmail Support number Is the one of the best service provider in Australia.If you have any issue regarding this or have any other query, then call anytime at Gmail Customer Support Number +61-283173460 for having the best solution to your problems.

eSIMs have been around for a while but hadn't received much attention till yesterday. Then, Apple announced that its new iPhones would support dual-SIM capabilities via a combination of a nano SIM and an eSIM. While we're all familiar with nano SIMs, but what exactly is an eSIM? We explain.

We always want better lighting for our indoor lighting. LED Tubes from LEDMyplace.ca is the best options when it comes to lighting the have energy efficient, efficient brightness. These lighting fixtures are available in 2feet, 4feet, and 8feet.

Businesses have been changing the way they pursue their accounting affairs in last two decades. Including large enterprises, small and medium sized businesses are also adopting a cloud accounting software to make their accounting issues frictionless.

If you too want to jump into this pool with an exciting and engaging fantasy sports app, then this article is exclusively for you. Here, we have provided key features and the cost of development of this sports app.

Fantasy Sports App Development- How Much Does it Cost? Well, if you have never been into this development business, then you can consult the support team of the company to get an idea of which platform will suit to sports app you want to develop

If you too want to jump into this pool with an exciting and engaging fantasy sports app, then this article is exclusively for you. Here, we have provided key features and the cost of development of this sports app.

Fitness has long been an essential aspect of human existence, and it has become increasingly popular in recent years, thanks to the availability of several fitness applications and trackers. However, with certain added features, these applications can allow users to operate and handle gym equipment, suggest optimal diets, improve training routines, and monitor personal fitness activity, among other benefits. We are going to look at the 7 Must-Have features of fitness applications in 2023 that can make your fitness app distinct from others available in the market.

It is fact that if you have an AirPrint enabled printer. You can print everything but if you don't have an AirPrint-enabled printer. Don't worry; you can print from you non-AirPrint-enabled printer because we have a solution for your problem that how to print from iPhone or iPad without an AirPrint-enabled printer.

In this article, we'll look at what the continued rise of AI means for the real estate industry, as well as what it could entail for both realtor's and customer's experiences. And we'll go through some of the most significant ways AI is altering the real estate industry. You should have a much better idea of the changes AI has brought to the real estate sector by the conclusion of it. So, let's begin!

we'll go through some of the most significant ways AI is altering the real estate industry. You should have a much better idea of the changes AI has brought to the real estate sector by the conclusion of it. So, let's begin!

In this article, we'll look at what the continued rise of AI means for the real estate industry, as well as what it could entail for both realtor's and customer's experiences. And we'll go through some of the most significant ways AI is altering the real estate industry. You should have a much better idea of the changes AI has brought to the real estate sector by the conclusion of it. So, let's begin!

AUPINS provides various kinds of harness connectors. Compared to the other manufacturers that supply harness connector, the harness cable connector in AUPINS have simple structure, excellent performance. We have harness cable connector, harness wire connector. RFQ AUPINS Today!

Cable Harness Connector AP cable harness customized products have simple structure, excellent performance, high flame retardant grade, wear resistance, and are able to work stably in environmental extremes; and meet the requirements of environmental friendly. We can provide you different types of cable harness connectors and tell you the correct usage of harness connectors.

Take a look on Infographic to know about Windows application development process. Before going to start any project developers have done detailed market research for that application scope and demand

Your business app should be intelligent enough to accept all type of payment and to keep a track of it for bank reconciliation. A smart app for a smart phone can make a track of the due amount of a regular customer.