解析 B。解析:文章中提到“When an object is placed in water, it experiences an upward force called buoyant force. If the buoyant force is greater than the weight of the object, the object will float.”,所以使物体漂浮的力是浮力。反馈 收藏 ...
The Electromagnet Interactive allows a learner to explore what is required to make an electromagnet and what makes an electromagnet a stronger magnet. Users can add and remove an iron core, adjust the number of batteries used in the circuit, change the number of loops in the coiled wire, and...
A. The metal is non-magnetic. B. The magnet is weak. C. The metal is magnetic. D. The E. xperiment F. ailed. 相关知识点: 试题来源: 解析 C。磁铁吸引金属物体说明这个金属是有磁性的。A 选项非磁性不符合;B 选项磁铁弱不是结论;D 选项实验失败错误。反馈 收藏 ...
As shown in Figure 1, when a magnet is brought close to the coil, the magnetic flux density in the coil increases by ΔB. Then, an induced electromotive force/induced current that generates a magnetic flux in a direction that hinders an increase in magnetic flux density is generated in ...
Best Junk Journal Tips And Ideas By Linda F Correa5 hours ago Fred Gwynne was much more than Herman Munster. He was a Renaissance Man By jameswritesbest5 hours ago Frugal Living 50 Kick-Ass Companies That Send Free Stuff By AmyAug 26, 2022 ...
Force is everywhere and it comes in a variety of sizes, directions, and type. We can define Force as the push or pull of an object. Learn Force definition, unit & types of Force with solved examples.
a为了给外国人留下一个好印象 In order to makes a good impression to the foreigner [translate] a我最爱的人, I most love human, [translate] a你可以出去玩了 You might exit to play [translate] a我的祖母有一个漂亮的毯子 My grandmother has an attractive blanket [translate] a第一病室 First...
So far we’ve got that current flowing in the same direction down two wires makes those wires attract, and current flowing in opposite directions makes them repel. To get the magnets of your childhood (some of our childhoods) all you have to do is turn that wire into a loop. ...
We also know that future-mindedness itself will become the object of greater study. We are discovering that there are many things that human beings do easily that computers can do only with great difficulty, if at all. Cognitive scientists are now trying to decode the human im...
This scenic place is a magnet, attracting hundreds and thousands of tourists from all over the world. But now there are also plans to build up to 200 turbines in this scenic place! Ann-Kathrin Blankenberg is a PhD student and an opponent of the plans. “It is not because this is the...