单词:surface tension force
单词:surface tension force 相关文章
40 Cohesion-tension Theory Atmospheric pressure can support a column of water up to 10 meters high. But plants can move water much higher; the sequoia tree can pump water to its very top more than 100 meters above the ground. Until the end of the ni
Atmospheric pressure can support a column of water up to 10 meters high. But plants can move water much higher; the sequoia tree can pump water to its very top more than 100 meters above the ground. U
Hoverboards Ignore Gravity Can you imagine riding around the streets of your hometown on a skateboard without wheels? In the late 1980s, film director Robert Zemeckis showed a skateboard floating above the ground in his movie Back To The Future Part
Under Pressure压力之下 In physics, pressure depends on the amount of force acting on a surface and on the size of the surface. The smaller the surface, the greater the pressure. Lets say that a woman steps on your toe; she weighs 120 pounds. If s
Even as adults we still enjoy blowing bubbles, dont we? If youve ever wondered why blowing on a thin film of soapy water creates bubbles, this is your lucky day. All liquids have a property called surface tension. Take water, for example. Water molec
Reduction of Your Tension Alternate tasks blocking out an entire day or week for a high-priority project increases your anxiety without boosting your productivity -in fact, you may lose perspective and focus. You need to create a rhythm to your work
By Robert Berger Jerusalem 24 September 2007 Israel is playing down tensions with its arch-enemy to the north - Syria. As Robert Berger reports from VOA's Jerusalem bureau, there are new moves to bring Syria into the Middle East peace process. Prime
By Nick Wadhams Nairobi 15 August 2007 The government of south Sudan says dialogue with the Sudanese government in Khartoum has completely broken down and a peace deal signed in 2005 is in jeopardy. As Nick Wadhams reports from Nairobi, tension conti
By Gilbert da Costa Abuja 19 July 2007 A popular Islamic preacher in northwestern Nigeria has died, hours after being shot near a mosque. For VOA, Gilbert da Costa reports that confirmation of the cleric's death has set residents on edge. Residents o
Cohesion-tension Theory Atmospheric pressure can support a column of water up to 10 meters high. But plants can move water much higher; the sequoia tree can pump water to its very top more than 100 meters above the ground. Until the end of the ninete
白领英语晨读-131 Reduction of Your Tension 减轻压力
If we could flip a switch and just turn off the Earth's magnetic field, it will take about 15,000 years to disappear, based on the rate of decay of the field that we've seen over the last 150 years. It's currently decaying at a rate that would see an
Suspension bridges such as the Golden Gate Bridge and the Brooklyn Bridge are some of the most amazing structures on earth. These aesthetic and technological wonders span rivers, and other obstacles with enough strength to support endless streams of
ENVIRONMENT REPORT - September 6, 2002: Geckos and Their Sticky Feet By Cynthia Kirk This is the VOA Special English ENVIRONMENT REPORT. Geckos are small lizards that live in warm climates. These liza
Cohesion-tension Theory Atmospheric pressure can support a column of water up to 10 meters high. But plants can move water much higher; the sequoia tree can pump water to its very top more than 100 meters above the ground. Until the end of the ninete
It is called Russias Davos - an annual summer solstice gathering where foreign company heads mix and mingle under one roof in St. Petersburg. With the British rocker Sting playing to the crowd, the Kremlin plans it as a lovefest for financial types.
如何在托福阅读中提取句子的主干?这样即抓住了阅读的重点,也节省了阅读时间。有些同学对于分析长难句并不是那么敏感,看到句子简化题可能就会有晕头转向的感觉,在这里给大家讲解一
On our last program, we learned how water bugs manage to stand on the surface of a pond: The pads of their feet resist contact with the water just like wax paper does. This allows the bug to rest on the thin film of surface tension that naturally cov
The scale is of course more an idea than an object, an arbitrary measure of the Earth's tremblings based on surface measurements. 当然,里氏震级是一个概念,不是一件东西,是一个根据地面测量的结果武断地得出的地球震
Why Frisbees Fly With a gentle flick of the wrist on a warm summer day, you can launch a frisbee on a long and graceful flight. Why do they fly so well? One reason is something called gyroscopic force. This is the tendency of a spinning object to mai