A wave is a disturbance that transfersenergyfrom one place to another without transferring matter. Waves transfer energy away from the source, or starting place, of the energy. The contact of raindrops or a stone on the surface of the water is the source of energy for the water waves. Wave...
摘要: We show that gravitational waves which possess a non-vanishing Riemann tensor Riklm ≠ 0 always carry energy-momentum and angular momentum. Our proof uses canonical superenergy and supermomentum tensors for the gravitational field.关键词:gravitational waves...
In the paper we show that the real gravitational waves which have\n$R_{iklm}ot= 0$ always carry energy-momentum and angular momentum. Our proof\nuses canonical superenergy and supermomentum tensors for gravitational field.doi:10.1002/1521-3889(200206)11:6<442::AID-ANDP442>3.0.CO;2-A...
Your energy is transferred (转移) to the bike. That makes the bike move. Now imagine riding your bike to create enough power to run a computer. Some students at one school did just that! They jumped on bikes connected to generators (发 电机) and pedaled in place. Soon they were ...
E.Just because you have a fast heartbeat and sweaty palms, that does not necessarily mean you will fail. F.Just like many people get stage fright before delivering a speech, this nervous energy can help to motivate. G.Some people also experience physical symptoms such as sweaty palms or a...
fashion, forge - make out of components (often in an improvising manner); "She fashioned a tent out of a sheet and a few sticks" cooper - make barrels and casks 16. make - perform or carry out; "make a decision"; "make a move"; "make advances"; "make a phone call" perform, ...
Like all engineering disciplines, electrical engineering is closely connected tophysics, an area of science that investigates the nature of matter and energy. Like physics, electrical engineering requires the interpretation and application of complex theories, and it also demands technica...
The first component of transilience indicates the perceived capacity to persist in the face of climate change risks, that is, whether people perceive they have the resources to cope and carry on in the face of climate change risks. Persistence is at the core of resilience, commonly understood ...
a对于丁克族来说,孩子是一件麻烦的事 Regarding Ding Kezu, the child is a troublesome matter[translate] alet us down 放下我们[translate] aThe Energy Calculator can be used to determine 能量计算器可以使用确定[translate] a从失去土地前后两个方面了解收入来源渠道、数量等情况 From loses around the lan...
Drawing from Kahn et al.’s argument [40], role overload can potentially arise in the single domain of family when an individual feels there is insufficient time or human energy to carry out all of the expected role functions within the family. In this case, individuals with higher FRO are...